BETTS, R H1958-06-012009-05-311958-06-012009-05-311958-06-01BETTS RH. The investigation and treatment of congenital cyanotic heart disease. Journal of the Indian Medical Association. 1958 Jun; 30(11): 353-7http://imsear.searo.who.int/handle/123456789/97213engCardiovascular AbnormalitiesThe investigation and treatment of congenital cyanotic heart disease.Journal Article