Khattak, Safeer Khan, et al. “A PHARMACOECONOMIC STUDY IN TWO TERTIARY CARE HOSPITALS IN ABBOTTABAD”. Journal of Ayub Medical College Abbottabad, vol. 24, no. 2, June 2012, pp. 147-9, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/2219.