Comparison of nutritional supplements in improving glycolipid metabolism and endocrine function in polycystic ovary syndrome: a systematic review and network meta-analysis 1Beijing University of Chinese Medicine, Beijing, China 2Capital Medical University, Beijing, China 3Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China DOI 10.7717/peerj.16410 Academic Editor Peixin Dong Subject Areas Nutrition, Women’s Health, Metabolic Sciences Keywords...