Original
Relationship of circulating levels of 25(OH) vitamin D with parathyroid hormone in Iranian patients with chronic kidney disease not yet on dialysis; what is the best threshold for 25(OH) vitamin D
Farrokhlaga Ahmadi 1,2 * , Zahra Mohebbi 1,2, Mitra Mahdavi-Mazdeh 1,2, Mahboob Lessan-Pezeshki 1,2