Rathnayake, B. ., R. P. . Illeperuma, U. . Ralapanawa, and T. . Jayalath. “The Use of Rose Angina Questionnaire and 12 Lead Electrocardiogram (ECG) in the Identification of Potential Ischemic Heart Changes Among a Group of Hypertensive Patients in Sri Lanka”. Asian Pacific Journal of Health Sciences, vol. 7, no. 2, June 2020, pp. 12-17, doi:10.21276/apjhs.2020.7.2.3.