RT Journal Article SR Electronic T1 Drug resistant Mycobacterium tuberculosis in Saudi Arabia JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 139 OP 139 VO 7 IS 2 A1 Subash C. Arya YR 2002 UL http://nsj.org.sa/content/7/2/139.abstract AB