Saeed, A.K., et al. “A STUDY OF AETIOLOGICAL FACTORS OF HYPERTENSION IN HOSPITALIZED PATIENTS FROM RURAL AREAS OF ABBOTTABAD”. Journal of Ayub Medical College Abbottabad, vol. 2, no. 1, Feb. 1989, pp. 2-5, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/4642.