[Follow-up survey with letter-inquiry on lameness as a sequela of poliomyelitis].
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002681:China; D005260:Female; D005500:Follow-Up Studies; D006306:Health Surveys; D006801:Humans; D008297:Male; D011051:Poliomyelitis / Q000150:complications* / Q000453:epidemiology