Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 35 3 2006 09 15 58 63 P Alizadeh F Naderi K Sotoudeh 2015 10 03 Prevention and treatment of the rickets of prematurity is an important aspect of the care of preterm infants. The purpose of this study was to compare the prophylactic effects of different doses of vitamin D on the clinical, biochemical and radiological indices of the rickets of prematurity. In a randomized clinical trial, 68 premature infants ( https://ijph.tums.ac.ir/index.php/ijph/article/view/2165 https://ijph.tums.ac.ir/index.php/ijph/article/download/2165/2146