Purnamasari, D., Soewondo, P. and Djauzi, S. (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), pp. 228-33. doi: 10.13181/mji.v24i4.1270.