Nykonenko, A. O., Haidarzhi, Y. I., Nykonenko, O. S., Holovko, M. H. and Protsenko, A. S. (2019) “The role of bariatric surgery and appetite-related hormones metabolism in obesity treatment: a literature review”, Zaporozhye мedical journal, (6). doi: 10.14739/2310-1210.2018.6.146775.