2Lam YH, Ghosh A, Tang MHY, et al. Early ultrasound prediction of pregnacies affected by homozygous a-thalassemia-1. Prenat Diagn,1997,17:327 - 332.
3Lain YH, Mary H YT, Chin D. Prenatal altrasonographic prediction of homozygous type 1 a-thalassemia at 12 to 13 weeks of gestation. Am J Obstet Gynecol, 1999,1 : 180 - 181.
