D. F. Tayyab, D. A. AHMED, A. M. KAYANI, D. W. AHMED, D. A. RAZA, and D. S. AZIZ, “ROLE OF DISTAL PROTECTION DEVICE IN PREVENTION OF DISTAL EMBOLIZATION DURING PCI OF SAPHENOUS VEIN GRAFTS AT AFIC/NIHD; AN EXPERIENCE OF 26 CASES”, Pak Heart J, vol. 42, no. 3-4, Jun. 2012.