Iqbal, Javed, et al. “EFFECT OF INTERNAL MAMMARY ARTERY HARVESTING WITH AND WITHOUT PLEUROTOMY ON RESPIRATORY COMPLICATIONS IN PATIENTS UNDERGOING CORONARY ARTERY BYPASS GRAFTING”. Journal of Ayub Medical College Abbottabad, vol. 28, no. 3, Aug. 2016, pp. 41-475, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/804.