Zhang X, Xie L, Zhong M, Yang B, Yang Q, Yang H, Xie C. The association between melatonin receptor 1B gene polymorphisms and type 2 diabetes mellitus (T2DM) in Chinese populations: a meta-analysis. Ann Palliat Med. 2020 May;9(3):957–66. doi: 10.21037/apm-20-691. PMID: 32434355.