title: Vitamin D metabolism in the rickets of very-low-birth-weight, premature infants.
mesh_terms: D002117:Calcitriol / Q000097:blood*; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000097:blood*; D012279:Rickets / Q000097:blood*
chemical_list: D002117:Calcitriol