RT Journal Article SR Electronic T1 Incidence of influenza A H1N1 2009 infection in Eastern Saudi Arabian hospitals JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 98 OP 98 VO 33 IS 1 A1 Al-Mendalawi, Mahmood D. YR 2012 UL http://smj.org.sa/content/33/1/98.abstract AB