Nykonenko, A. O., Y. I. Haidarzhi, O. S. Nykonenko, M. H. Holovko, and A. S. Protsenko. “The Role of Bariatric Surgery and Appetite-Related Hormones Metabolism in Obesity Treatment: A Literature Review”. Zaporozhye мedical Journal, no. 6, Feb. 2019, doi:10.14739/2310-1210.2018.6.146775.