Ingle, V N1968-05-012009-05-301968-05-012009-05-301968-05-01Ingle VN. Pyrexia of unknown origin. Indian Journal of Pediatrics. 1968 May; 35(244): 249-50http://imsear.searo.who.int/handle/123456789/84739engFever --etiologyHumansJournal Article