Ashabai, P VJohn, T JJayabal, P1969-10-012009-05-271969-10-012009-05-271969-10-01Ashabai PV, John TJ, Jayabal P. Infection and disease in a group of South Indian families. 8. The incidence and severity of whooping cough. Indian Pediatrics. 1969 Oct; 6(10): 645-50http://imsear.searo.who.int/handle/123456789/10839engChildChild, PreschoolFemaleHumansIndiaInfantMaleWhooping Cough --epidemiologyInfection and disease in a group of South Indian families. 8. The incidence and severity of whooping cough.Journal Article