Khalilullah, MMathur, V SRoy, S B1975-07-012009-05-271975-07-012009-05-271975-07-01Khalilullah M, Mathur VS, Roy SB. Oesophageal electrocardiography. Indian Heart Journal. 1975 Jul; 27(3): 173-9http://imsear.searo.who.int/handle/123456789/3420engAdolescentAdultArrhythmias, Cardiac --diagnosisElectrocardiography --methodsEsophagusFemaleHumansMaleMiddle AgedCase Reports