by Ardawi, M.S. et al.
Department of Clinical Biochemistry, Faculty of Medicine and King Abdulaziz University Hospital, Jeddah, Saudi Arabia
Department of Clinical Biochemistry, Faculty of Medicine and King Abdulaziz University Hospital, Jeddah, Saudi Arabia
The effect of cigarette or sheesha smoking on first-trimester markers of Down syndrome.
BJOG. 2007; 11:1397-401