Purnamasari, Dyah, Pradana Soewondo, and Samsuridjal Djauzi. 2015. “Sunlight–derived Vitamin D Affects Interleukin-4 Level, T Helper 2 Serum Cytokines, in Patients With Graves’ Disease: A Prospective Cohort Study”. Medical Journal of Indonesia 24 (4):228-33. https://doi.org/10.13181/mji.v24i4.1270.