Preconception maternal retinal venular widening and steeper resistance increments in the utero-fetoplacental circulation in pregnancy oleh Ling-Jun Li, Mosammat Nazmun Nahar, Ruochen Du, Jerry Kok Yen Chan, June Vic Khi Tan, Johan G. Eriksson, Tien Yin Wong, Shiao-Yng Chan, Lin Lin Su, Yap Seng Chong, Cuilin Zhang