Obesity, Morbid

• Ambulatory Obesity Program, Charité University, Berlin — Berlin, Germany
• Vestische Kinderklinik, University of Witten/Herdecke — Datteln, Germany
• University Duisburg-Essen — Essen, Germany
• University Hospital Leipzig — Leipzig, Germany

• Ambulatory Obesity Program, Charité University, Berlin — Berlin, Germany
• Vestische Kinderklinik, University of Witten/Herdecke — Datteln, Germany
• Center for Clinical Trials Essen — Essen, Germany
• University Duisburg-Essen — Essen, Germany

• University Duisburg-Essen — Essen, Germany

• Sedat AKBAS — Malatya, Türkiye-Türkçe, Turkey (Türkiye)

• Institut universitaire de cardiologie et de pneumologie de Québec — Québec, Quebec, Canada

• Medical University of Vienna — Vienna, Austria

Not specified

• Massachusetts General Hospital — Boston, Massachusetts, United States
• MGH — Boston, Massachusetts, United States

• Inonu University Faculty of Medicine Department of Anesthesiology and Reanimation — Malatya, Turkey (Türkiye)

• Haugesund Hospital, Helse Fonna HF — Haugesund, Rogaland, Norway