Letter: Bowlegs, knock-knees and vitamin D status in schoolchildren.
D000293:Adolescent; D002648:Child; D006801:Humans; D007557:Israel; D007592:Joint Diseases / Q000150:complications* / Q000453:epidemiology; D007719:Knee Joint; D013019:South Africa; D014808:Vitamin D Deficiency / Q000150:complications* / Q000453:epidemiology