TY - JOUR T1 - Neonatal rickets in one of identical twins JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 792 LP - 794 DO - 10.1136/adc.57.10.792 VL - 57 IS - 10 AU - I Z Kovar AU - P Mayne AU - J Wallis Y1 - 1982/10/01 UR - http://adc.bmj.com/content/57/10/792.abstract N2 - We report a case of rickets in one of identical low birthweight twin infants. Plasma 25-hydroxycholecalciferol concentrations were normal in both infants; there was good clinical response to 1-α hydroxycholecalciferol. We suggest that there was a delay in maturation of renal 25-hydroxycholecalciferol-1α hydroxylase enzyme. ER -