-
Fetal and maternal hCG concentration in aneuploid pregnancies.
Abbas A, Chard T, Nicolaides KH.
Br J Obstet Gynaecol 1995;102:561-3. -
Serum ferritin and cobalamin in red blood cell isoimmunisation.
Abbas A, Nicolaides KH.
Fetal Diagn Ther 1995;10:297-300.