World Chinese Journal of Digestology, Volume 28, Issue 21,2020, Pages 1090-1095, doi:10.11569/wcjd.v28.i21.1090
World Chinese Journal of Digestology, Volume 28, Issue 21,2020, Pages 1102-1106, doi:10.11569/wcjd.v28.i21.1102
World Chinese Journal of Digestology, Volume 28, Issue 21,2020, Pages 1068-1075, doi:10.11569/wcjd.v28.i21.1068
World Chinese Journal of Digestology, Volume 28, Issue 21,2020, Pages 1076-1083, doi:10.11569/wcjd.v28.i21.1076