Serum alkaline phosphatase and rickets in urban schoolchildren.
D000469:Alkaline Phosphatase / Q000097:blood*; D002648:Child; D004739:England; D005006:Ethnicity; D005260:Female; D006801:Humans; D014808:Vitamin D Deficiency / Q000201:enzymology*
D000469:Alkaline Phosphatase