Faculty profile
John Hagen
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Read how they describe their research on their University of Toronto profile.
Latest papers
Evolution and Outcomes of a Canadian Pediatric Bariatric Surgery Program.
Journal of pediatric surgery · 2019
Laparoscopic approach to a bleeding marginal ulcer fistulized to the gastric remnant in a patient post Roux-en-Y gastric bypass.
Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2017 · senior author
Adolescent Bariatric Surgery: The Canadian Perspective
Seminars in Pediatric Surgery · 2014
3 publications.
Evolution and Outcomes of a Canadian Pediatric Bariatric Surgery Program.
Akinkuotu AC, Hamilton JK, Birken C, Toulany A, Strom M, Noseworthy R, Hagen J, Dettmer E, Langer JC
Laparoscopic approach to a bleeding marginal ulcer fistulized to the gastric remnant in a patient post Roux-en-Y gastric bypass.
Pang AJ, Hagen J
Adolescent Bariatric Surgery: The Canadian Perspective
Davies DA, Hamilton J, Dettmer E, Birken C, Jeffery A, Hagen J, Anvari M, Langer JC
Frequent collaborators
- Jill Hamilton and Catherine Birken: 20 shared papers
- Jill Hamilton and Alene Toulany: 7 shared papers
- Catherine Birken and Jacob Langer: 5 shared papers
- Jill Hamilton and Jacob Langer: 4 shared papers
- Catherine Birken and Alene Toulany: 4 shared papers
- Alene Toulany and Jacob Langer: 3 shared papers
- Catherine Birken and John Hagen: 2 shared papers
- Jacob Langer and John Hagen: 2 shared papers
- Mehran Anvari and Jill Hamilton: 1 shared paper
- Mehran Anvari and Catherine Birken: 1 shared paper
- Mehran Anvari and Jacob Langer: 1 shared paper
- Mehran Anvari and John Hagen: 1 shared paper
- Jill Hamilton and John Hagen: 1 shared paper
- Alene Toulany and John Hagen: 1 shared paper
- Department of Surgery
- Institute of Health Policy, Management, and Evaluation
- Department of Paediatrics
- Department of Nutritional Sciences
Co-authors at University of Toronto, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.
Catherine Birken
Institute of Health Policy, Management, and Evaluation
2 shared papers, latest 2019
Jacob Langer
Department of Surgery
2 shared papers, latest 2019
Mehran Anvari
Department of Surgery
1 shared papers, latest 2014
Jill Hamilton
Department of Nutritional Sciences
1 shared papers, latest 2014
Alene Toulany
Department of Paediatrics
1 shared papers, latest 2019
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Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.