Fig. 2From: Metabolic and hormonal effects of melatonin and/or magnesium supplementation in women with polycystic ovary syndrome: a randomized, double-blind, placebo-controlled trialSerum magnesium levels of study participants throughout the study. P* value based on paired-samples t test. P** values based on Analysis of Covariance (ANCOVA) after adjustment of baseline values. Mg magnesiumBack to article page