Andriana, Andriana, Suharyo Hadisaputro, and Aris Santjaka. 2021. “Effect of Vitamin D on Hormonal Factors in Women With Polycystic Ovary Syndrome (PCOS): Systematic Review and Meta-Analysis”. STRADA : Jurnal Ilmiah Kesehatan 10 (1):410-21. https://doi.org/10.30994/sjik.v10i1.653.