Gopala Raju, A RSukumar, I PCherian, GAlurkar, V MKrishnaswami, SJohn, S1979-07-012009-05-271979-07-012009-05-271979-07-01Gopala Raju AR, Sukumar IP, Cherian G, Alurkar VM, Krishnaswami S, John S. Ostium primum atrial septal defect a clinical and haemodynamic profile. The Indian Journal of Chest Diseases & Allied Sciences. 1979 Jul-Sep; 21(3): 116-24http://imsear.searo.who.int/handle/123456789/29832engAdolescentAdultChildChild, PreschoolFemaleHeart Septal Defects, Atrial --diagnosisHemodynamicsHumansHypertension, Pulmonary --complicationsMaleVascular ResistanceJournal Article