International Journal of Obesity (2005) GENEVA Collaborators 2022, ' 30-day morbidity and mortality of sleeve gastrectomy, Roux-en-Y gastric bypass and one anastomosis gastric bypass : a propensity score-matched analysis of the GENEVA data ', International journal of obesity, vol. 46, no. 4, pp. 750-757 . https://doi.org/10.1038/s41366-021-01048-1