Kalim, Shahid, and Muhammad Shakil Akhtar. 2014. “USE OF COMPUTED TOMOGRAPHIC PULMONARY ANGIOGRAPHY FOR THE DIAGNOSIS OF PULMONARY EMBOLISM; ARE WE OVERDOING IT?”. Journal of Ayub Medical College Abbottabad 26 (1):76-79. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/1638.