RETRACTED: Evaluation of simultaneous surgical operations in obesity patientsDmitriy Galimov, Oleg Galimov, Vladislav Khanov, Rinat Sufiyarov, Tel’man Ibragimov and Gul’naz VagizovaE3S Web Conf., 420 (2023) 05006DOI: https://doi.org/10.1051/e3sconf/202342005006