Prematurity and rickets.
D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases; D012279:Rickets
INFANT NUTRITION; INFANT, PREMATURE/diseases; RICKETS