RT Journal Article SR Electronic T1 Vaccine-associated paralytic poliomyelitis in a pre-vaccinated infant JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1678 OP 1679 VO 29 IS 11 A1 Al-Mendalawi, Mahmood D. A1 Kakish, Khalid YR 2008 UL http://smj.org.sa/content/29/11/1678.abstract