gholam hossein amirhakimi department of pediatrics, division of endocrinology and metabolism, shiraz university of medical sciences and health services, shiraz, iran zohre karamizadeh department of pediatrics, division of endocrinology and metabolism, shiraz university of medical sciences and health services, shiraz, iran setilla dalili department of pediatrics, division of endocrinology and metabolism, shiraz university of medical sciences and health services, shiraz, iran hamdollah karamifar department of pediatrics, division of endocrinology and metabolism, shiraz university of medical sciences and health services, shiraz, iran