[Pattern of recurrences of tertian malaria in the eastern Henan district].
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002681:China; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008288:Malaria / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control; D012008:Recurrence; D013997:Time Factors