Lubis, S.M., Pediatric Endocrinology Division, Department of Child Health, Faculty of Medicine, Universitas Sumatera Utara, Jl. Dr. T. Mansur No.5, Padang Bulan, Sumatera Utara, Medan, 20155, Indonesia; Fattah, M., Department of Molecular Biology, Prodia Widyahusada Laboratory, Jakarta, Indonesia; Batubara, J.R.L., Pediatric Endocrinology Division, Department of Child Health, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia