Upper respiratory tract infections and their association with knowledge, attitude and practice among Malaysian hajj pilgrims of 2007 A.D (1428 h)[RS1-441].

Setiap tahun lebih dari dua juta Muslim daripada lebih 140 negara menunaikan ibadat haji di Mekah dan Madinah. Each year more than two million Muslims perform the hajj rituals, in Makkah and Medina from over 140 countries.