%0 Letter %T A rare case of vaginal yolk sac tumor in an infant. %A Dong W %A Yang Q %A Feng Y %A Zhang J %J Asian J Surg %V 0 %N 0 %D Nov 2021 27 %M 34848144 %F 2.808 %R 10.1016/j.asjsur.2021.10.042 %X