妊娠滋养细胞疾病的病因是什么?

查阅妊娠滋养细胞疾病患者所认为的一些妊娠滋养细胞疾病病因

原本


There has to have been a pregnancy, The trophoblast that form the placenta are abnormal and form tumours instead of the placenta.

翻译