1 alpha-hydroxyvitamin D in nutritional rickets.
D000284:Administration, Oral; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D006887:Hydroxycholecalciferols / Q000008:administration & dosage / Q000627:therapeutic use*; D007223:Infant; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000188:drug therapy*; D012279:Rickets / Q000188:drug therapy*; D013997:Time Factors
D006887:Hydroxycholecalciferols