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2024
1 Bjerkan, Kirsti; Sandvik, Jorunn; Nymo, Siren; Johnsen, Gjermund; Hyldmo, Åsne Ask; Kulseng, Bård Eirik; Salater, Sissel; Høydal, Kjetil L; Hoff, Dag Arne Lihaug.
Postbariatric hypoglycemia, abdominal pain and gastrointestinal symptoms after Roux-en-Y gastric bypass explored by continuous glucose monitoring.. Obesity Research and Clinical Practice 2024 ;Volum 18.(1) s. 9-14
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2023
2 Bjerkan, Kirsti Kverndokk; Sandvik, Jorunn; Nymo, Siren; Græslie, Hallvard; Johnsen, Gjermund; Mårvik, Ronald; Hyldmo, Åsne Ask; Kulseng, Bård Eirik; Sommerseth, Sandra; Høydal, Kjetil L; Hoff, Dag Arne Lihaug.
Vitamin and Mineral Deficiency 12 Years After Roux-en-Y Gastric Bypass a Cross-Sectional Multicenter Study. Obesity Surgery 2023 ;Volum 33.(10) s. 3178-3185
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3 Nilsson, K.; Klevebro, F.; Sunde, B.; Rouvelas, I.; Lindblad, M.; Szabo, E.; Halldestam, I.; Smedh, U.; Wallner, B.; Johansson, J.; Johnsen, Gjermund; Aahlin, Eirik Kjus; Johannessen, Hans Olaf; Alexandersson von Döbeln, von; Hjortland, Geir Olav; Wang, N.; Shang, Y.; Borg, D.; Quaas, A.; Bartella, I.; Bruns, C.; Schröder, W.; Nilsson, M..
Oncological outcomes of standard versus prolonged time to surgery after neoadjuvant chemoradiotherapy for oesophageal cancer in the multicentre, randomised, controlled NeoRes II trial. Annals of Oncology 2023 ;Volum 34.(11) s. 1015-1024
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4 Nymo, Siren; Lundanes, Julianne; Eriksen, Kevin; Aukan, Marthe Isaksen; Rehfeld, Jens Frederik; Holst, Jens Juul; Johnsen, Gjermund; Græslie, Hallvard; Kulseng, Bård Eirik; Sandvik, Jorunn; Alho Letra Martins, Catia Patricia.
Suboptimal Weight Loss 13 Years After Roux-en-Y Gastric Bypass Is Associated with Blunted Appetite Response. Obesity Surgery 2023 ;Volum 34. s. 592-601
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5 Søfteland, Eirik Østensen; Aasebøstøl, Anne Kristin; Johnsen, Gjermund; Bringeland, Erling Audun.
Endoluminal treatment for Zenker’s diverticulum–a population-based observational study. Scandinavian Journal of Gastroenterology 2023 s. -
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2022
6 Belgau, Ingrid Martine; Johnsen, Gjermund; Græslie, Hallvard; Mårvik, Ronald; Nymo, Siren; Bjerkan, Kirsti Kverndokk; Hyldmo, Åsne Ask; Kløckner, Christian; Kulseng, Bård Eirik; Hoff, Dag Arne Lihaug; Sandvik, Jorunn.
Frequency of cholelithiasis in need of surgical or endoscopic treatment a decade or more after Roux-en-Y gastric bypass. Surgical Endoscopy 2022 ;Volum 37. s. 1349-1356
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7 Bjerkan, Kirsti Kverndokk; Græslie, Hallvard; Johnsen, Gjermund; Mårvik, Ronald; Nymo, Siren; Hyldmo, Åsne Ask; Kulseng, Bård Eirik; Sandvik, Jorunn; Hoff, Dag Arne Lihaug.
Improved weight loss a decade after Roux-en-Y gastric bypass in patients attending a postoperative education program in groups. Zoom forward 2022; 2022-05-04 - 2022-05-07
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8 Bjerkan, Kirsti Kverndokk; Sandvik, Jorunn; Nymo, Siren; Græslie, Hallvard; Johnsen, Gjermund; Mårvik, Ronald; Hyldmo, Åsne Ask; Kulseng, Bård Eirik; Høydal, Kjetil L; Hoff, Dag Arne Lihaug.
The Long-Term Impact of Postoperative Educational Programs on Weight Loss After Roux-en-Y Gastric Bypass.. Obesity Surgery 2022 ;Volum 32.(9) s. 3005-3012
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9 Nymo, Siren; Lundanes, Julianne; Aukan, Marthe Isaksen; Sandvik, Jorunn; Johnsen, Gjermund; Græslie, Hallvard; Larsson, Ingrid; Martins, Catia.
Diet and physical activity are associated with suboptimal weight loss and weight regain 10–15 years after Roux-en-Y gastric bypass: A cross-sectional study. Obesity Research and Clinical Practice 2022 ;Volum 16.(2) s. 163-169
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10 Nymo, Siren; Lundanes, Julianne; Aukan, Marthe Isaksen; Sandvik, Jorunn; Johnsen, Gjermund; Græslie, Hallvard; Martins, Catia.
Diet and physical activity are associated with suboptimal weight loss and weight regain 10–15 years after Roux-en-Y gastric bypass: A cross-sectional study. Obesity Research and Clinical Practice 2022
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11 Sandvik, Elfrid Christine Smith; Aasarød, Kristin Matre; Johnsen, Gjermund; Hoff, Dag Arne Lihaug; Kulseng, Bård Eirik; Hyldmo, Åsne Ask; Græslie, Hallvard; Nymo, Siren; Sandvik, Jorunn; Fossmark, Reidar.
The Effect of Roux-en-Y Gastric Bypass on Non-Alcoholic Fatty Liver Disease Fibrosis Assessed by FIB-4 and NFS Scores—An 11.6-Year Follow-Up Study. Journal of Clinical Medicine 2022 ;Volum 11.(16) s. 1-13
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2021
12 Sandvik, Jorunn; Bjerkan, Kirsti Kverndokk; Græslie, Hallvard; Hoff, Dag Arne Lihaug; Johnsen, Gjermund; Kløckner, Christian; Mårvik, Ronald; Nymo, Siren; Hyldmo, Åsne Ask; Kulseng, Bård Eirik.
Iron Deficiency and Anemia 10 Years After Roux-en-Y Gastric Bypass for Severe Obesity. Frontiers in Endocrinology 2021 ;Volum 12:679066. s. 1-9
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13 Strømmen, Magnus; Kløckner, Christian; Bjerkan, Kirsti Kverndokk; Græslie, Hallvard; Hoff, Dag Arne Lihaug; Johnsen, Gjermund; Kulseng, Bård; Mårvik, Ronald; Nymo, Siren; Sandvik, Jorunn.
Characteristics of Patients Reporting Presumed Problematic Drinking Behavior After Gastric Bypass: Exploring Long-Term Data From the BAROBS Study. Frontiers in Endocrinology 2021 ;Volum 12:679006. s. 1-9
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2020
14 Nilsson, Klara; Klevebro, Fredrik; Rouvelas, Ioannis; Lindblad, Mats; Szabo, Eva; Halldestam, Ingvar; Smedh, Ulrika; Wallner, Bengt; Johansson, Jan; Johnsen, Gjermund; Aahlin, Eirik Kjus; Johannessen, Hans Olaf; Hjortland, Geir Olav; Bartella, Isabel; Schröder, Wolfgang; Bruns, Christiane; Nilsson, Magnus.
Surgical Morbidity and Mortality From the Multicenter Randomized Controlled NeoRes II Trial: Standard Versus Prolonged Time to Surgery After Neoadjuvant Chemoradiotherapy for Esophageal Cancer. Annals of Surgery 2020 ;Volum 272.(5) s. 684-689
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2019
15 Nymo, Siren; Johnsen, Gjermund; Mårvik, Ronald; Græslie, Hallvard; Kulseng, Bård Eirik; Sandvik, Jorunn.
Patient satisfaction more than ten years after Roux-en-Y gastric bypass. Obesity Surgery 2019 ;Volum 29. Suppl. 5 s. 199-199
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16 Storli, Per Even; Johnsen, Gjermund; Juel, Ingebjørg Soterud; Grønbech, Jon Erik; Bringeland, Erling Audun.
Impact of increased resection rates and a liver parenchyma sparing strategy on long-term survival after surgery for colorectal liver metastases. A population-based study. Scandinavian Journal of Gastroenterology 2019 ;Volum 54.(7) s. 890-898
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17 Sunde, Berit; Johnsen, Gjermund; Jacobsen, Anne-Birgitte; Glenjen, Nils; Friesland, Signe; Lindblad, Mats; Rouvelas, Ioannis; Wang, Ningju; Lundell, Lars R.; Lagergren, Pernilla; Nilsson, Magnus.
Effects of neoadjuvant chemoradiotherapy vs chemotherapy alone on the relief of dysphagia in esophageal cancer patients: secondary endpoint analysis in a randomized trial. Diseases of the esophagus 2019 ;Volum 32:doy069.(2) s. 1-9
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18 Sunde, Berit; Klevebro, Fredrik; Johar, A; Johnsen, Gjermund; Jacobsen, Anne-Birgitte; Glenjen, Nils; Friesland, Signe; Lindblad, M; Ajengui, A; Lundell, L; Lagergren, Pernilla; Nilsson, Magnus.
Health-related quality of life in a randomized trial of neoadjuvant chemotherapy or chemoradiotherapy plus surgery in patients with oesophageal cancer (NeoRes trial). British Journal of Surgery 2019 ;Volum 106.(11) s. 1452-1463
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19 von Döbeln, Gabriella Alexandersson; Klevebro, Fredrik; Jacobsen, Anne-Birgitte; Johannessen, Hans Olaf; Nielsen, Niels Hilmer; Johnsen, Gjermund; Hatlevoll, Ingunn; Glenjen, Nils; Friesland, Signe; Lundell, Lars R.; Yu, Jingru; Nilsson, Magnus.
Neoadjuvant chemotherapy versus neoadjuvant chemoradiotherapy for cancer of the esophagus or gastroesophageal junction: long-term results of a randomized clinical trial. Diseases of the esophagus 2019 ;Volum 32.(2) s. 1-11
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20 Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bernstein, Tor Eivind; Aadahl, Petter; Johnsen, Gjermund; Mårvik, Ronald.
Optimal timing of assessment tasks depending on experience level of surgical trainees. MITAT. Minimally invasive therapy & allied technologies 2019 ;Volum 29.(3) s. 161-169
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2017
21 Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bø, Lars Eirik; Kuhry, Esther; Johnsen, Gjermund; Mårvik, Ronald; Langø, Thomas; Hernes, Toril A. Nagelhus.
Lack of transfer of skills after virtual reality simulator training with haptic feedback. MITAT. Minimally invasive therapy & allied technologies 2017 ;Volum 26.(6) s. 346-354
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2016
22 Chen, Duan; Olsen, Magnus Kringstad; Strømmen, Magnus; Johannessen, Helene; Bjøru, Hege Tevik; Salater, Sissel; Johnsen, Gjermund; Mårvik, Ronald; Zhao, Chun-Mei; Kulseng, Bård Eirik.
Intragastric Injection of Botulinum Toxin a to Treat Obesity: Mechanism of Action and a Randomized, Double-Blind, Placebo-Controlled Phase II Trial With Open-Label Extension Study. Gastroenterology 2016 ;Volum 150.(4) Suppl. 1 s. 823-823
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23 Klevebro, Fredrik; von Döbeln, Gabriella Alexandersson; Wang, Na; Johnsen, Gjermund; Jacobsen, Anne-Birgitte; Friesland, Signe; Hatlevoll, Ingunn; Glenjen, Nils; Lind, Pehr; Tsai, Jon A.; Lundell, Lars; Nilsson, Magnus.
A randomized clinical trial of neoadjuvant chemotherapy versus neoadjuvant chemoradiotherapy for cancer of the oesophagus or gastro-oesophageal junction. Annals of Oncology 2016 ;Volum 27.(4) s. 660-667
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24 von Döbeln, Gabriella Alexandersson; Nilsson, Magnus; Adell, Gunnar; Johnsen, Gjermund; Hatlevoll, Ingunn; Tsai, Jon; Lundell, Lars; Lund, Mikael; Lind, Pehr.
Pulmonary function and cardiac stress test after multimodality treatment of esophageal cancer. Practical Radiation Oncology 2016 ;Volum 6.(3) s. e53-e59
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2015
25 Klevebro, Fredrik; Johnsen, Gjermund; Johnson, Egil; Viste, Asgaut; Myrnäs, Torbjörn; Szabo, Eva; Jacobsen, Anne-Birgitte; Friesland, Signe; Tsai, Jon A.; Persson, Saga; Lindblad, Mats; Lundell, Lars; Nilsson, Magnus.
Morbidity and mortality after surgery for cancer of the oesophagus and gastro-oesophageal junction: A randomized clinical trial of neoadjuvant chemotherapy vs. neoadjuvant chemoradiation. European Journal of Surgical Oncology 2015 ;Volum 41.(7) s. 920-926
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26 Shikora, Scott A.; Toouli, James; Herrera, Miguel F.; Kulseng, Bård Eirik; Brancatisano, Roy; Kow, Lilian; Pantoja, Juan P.; Johnsen, Gjermund; Brancatisano, Anthony; Tweden, Katherine S.; Knudson, Mark B.; Billington, Charles J..
Erratum to: Intermittent vagal nerve block for improvements in obesity, cardiovascular risk factors, and glycemic control in patients with type 2 diabetes mellitus: 2-year results of the VBLOC DM2 Study. Obesity Surgery 2015 ;Volum Published ahead of print. s. -
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27 Shikora, Scott A.; Toouli, James; Herrera, Miguel F.; Kulseng, Bård Eirik; Brancatisano, Roy; Kow, Lilian; Pantoja, Juan P.; Johnsen, Gjermund; Brancatisano, Anthony; Tweden, Katherine S.; Knudson, Mark B.; Billington, Charles J..
Intermittent vagal nerve block for improvements in obesity, cardiovascular risk factors, and glycemic control in patients with type 2 diabetes mellitus: 2-year results of the VBLOC DM2 Study. Obesity Surgery 2015 ;Volum Published ahead of print. s. -
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2014
28 Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Johnsen, Gjermund; Mårvik, Ronald; Hernes, Toril A. Nagelhus.
Comparing new generation virtual reality simulators from Simbionix LTD and Surgical Science AB. 14th World Congress of Endoscopic Surgery; 2014-06-25 - 2014-06-28
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2013
29 Kodama, Yosuke; Johannessen, Helene; Furnes, Marianne Waldum; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård; Chen, Duan.
Mechanistic Comparison between Gastric Bypass vs. Duodenal Switch with Sleeve Gastrectomy in Rat Models. PLOS ONE 2013 ;Volum 8.(9)
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30 Bringeland, Erling Audun; Wasmuth, Hans; Johnsen, Gjermund; Johnsen, Tommy; Juel, Ingebjørg Soterud; Mjønes, Patricia Gjertrud; Uggen, Per Einar; Ystgaard, Brynjulf; Grønbech, Jon Erik.
Outcomes among patients treated for gastric adenocarcinoma during the last decade. Journal of Surgical Oncology 2013 ;Volum 107.(7) s. 752-757
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31 Shikora, S.; Toouli, J.; Herrera, M.F.; Kulseng, Bård Eirik; Zulewski, H.; Brancatisano, R.; Kow, L.; Pantoja, J.P.; Johnsen, Gjermund; Brancatisano, A.; Tweden, K.S.; Knudson, M.B.; Billington, C.J..
Vagal blocking improves glycemic control and elevated blood pressure in obese subjects with type 2 diabetes mellitus. Journal of Obesity 2013 ;Volum 2013. s. -
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32 Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bø, Lars Eirik; Chmarra, Magdalena Karolina; Kuhry, Esther; Johnsen, Gjermund; Mårvik, Ronald; Langø, Thomas.
Limitations of haptic feedback devices on construct validity of the LapSim® virtual reality simulator. Surgical Endoscopy 2013 ;Volum 27.(4) s. 1386-1396
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2012
33 Johannessen, Helene; Kodama, Yosuke; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård Eirik; Chen, Duan.
Evidence for the Hindgut Hypothesis After Ileal Interposition Associated With Sleeve Gastrectomy: Increased Number of GLP-1-Producing Cells in Interposed Ileum and Pancreatic Islets in Rats. Gastroenterology 2012 ;Volum 142.(5) Suppl. 1 s. S-1068-
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34 Johannessen, Helene; Kodama, Yosuke; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård Eirik; Chen, Duan; Revesz, David; Kuhn, Georg; Thorlin, Thorleif; Ben-Menachem, Elinor.
Altered Eating Behavior by Subdiaphragmatic Truncal Vagus Nerve Stimulation in Rats. Gastroenterology 2012 ;Volum 142.(5) Suppl. 1 s. S-892-
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35 Johannessen, Rune; Petersen, Hermod; Olberg, Petter; Johnsen, Gjermund; Fjøsne, Ulf; Kleveland, Per Martin.
Airway symptoms and sleeping difficulties in operated and non-operated patients with gastroesophageal reflux disease. Scandinavian Journal of Gastroenterology 2012 ;Volum 47.(7) s. 762-769
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36 Kodama, Yosuke; Johannessen, Helene; Furnes, Marianne Waldum; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård Eirik; Chen, Duan.
Gastric Bypass and Duodenal Switch Cause Body Weight Loss Through Different Mechanisms in Rats. Gastroenterology 2012 ;Volum 142.(5) Suppl. 1 s. S-1110-
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37 Langø, Thomas; Vijayan, Sinara; Rethy, Anna; Våpenstad, Cecilie; Solberg, Ole Vegard; Mårvik, Ronald; Johnsen, Gjermund; Hernes, Toril A. Nagelhus.
Navigated laparoscopic ultrasound in abdominal soft tissue surgery: technological overview and perspectives. International Journal of Computer Assisted Radiology and Surgery 2012 ;Volum 7.(4) s. 585-599
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38 Tweden, K; Toouli, J; Herrera, M; Kulseng, Bård Eirik; Brancatisano, R; Pantoja, J P; Johnsen, Gjermund; Brancatisano, A; Kow, L.
VAGAL BLOCKING: TREATMENT OF OBESITY RELATED TYPE 2 DIABETES AND BLOOD PRESSURE-18 MONTH RESULTS. Obesity Surgery 2012 ;Volum 22.(8) s. 1170-1170
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2011
39 Farup, Per Grønaas; Blix, Ivar; Førre, Sigurd; Johnsen, Gjermund; Lange, Ove Juel; Johannessen, Rune; Petersen, Hermod.
What causes treatment failure - the patient, primary care, secondary care or inadequate interaction in the health services?. BMC Health Services Research 2011 ;Volum 11. s. -
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1998
40 Haug, Erik Skaaheim; Sæther, Ola Dalsegg; Ødegård, Asbjørn; Johnsen, Gjermund; Myhre, Hans Olav.
Chylous complications after abdominal aortic surgery. International Angiology 1998 ;Volum 17.(4) s. 244-247
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