Two-Dimensional Differential Gel Electrophoresis to Identify Protein Biomarkers in Amniotic Fluid of Edwards Syndrome (Trisomy 18) Pregnancies. oleh Te-Yao Hsu, Hao Lin, Hsuan-Ning Hung, Kuender D Yang, Chia-Yu Ou, Ching-Chang Tsai, Hsin-Hsin Cheng, Su-Hai Chung, Bi-Hua Cheng, Yi-Hsun Wong, An Kuo Chou, Chang-Chun Hsiao