Zafar, Ahmed, Umair Abu Bakar Siddiq, Hafeez Ur Rehman, Abu Bakar Siddiq, and GA Shah. 2018. “THROMBOPROPHYLAXIS IN PATIENTS WITH EPIDURAL ANALGESIA AFTER HIP OR KNEE ARTHROPLASTY”. Pakistan Armed Forces Medical Journal 68 (4), 822-26. https://pafmj.org/index.php/PAFMJ/article/view/90.