MATHUR, R S1955-09-012009-05-301955-09-012009-05-301955-09-01MATHUR RS. Pyrexia of unknown origin. Indian Journal of Pediatrics. 1955 Sep; 22(93): 215http://imsear.searo.who.int/handle/123456789/78711engChildFeverInfantPyrexia of unknown origin.Journal Article