Al Mofleh I A, Al Aska A I, Al Sekait M A, Al Balla S R, Al Nasser A N
Departments of Medicine and Community and Family Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Ann Saudi Med. 1996 May;16(3):349-52. doi: 10.5144/0256-4947.1996.349.