World Chinese Journal of Digestology, Volume 28, Issue 8,2020, Pages 275-279, doi:10.11569/wcjd.v28.i8.275
World Chinese Journal of Digestology, Volume 28, Issue 8,2020, Pages 280-284, doi:10.11569/wcjd.v28.i8.280
World Chinese Journal of Digestology, Volume 28, Issue 8,2020, Pages 285-295, doi:10.11569/wcjd.v28.i8.285
World Chinese Journal of Digestology, Volume 28, Issue 8,2020, Pages 308-312, doi:10.11569/wcjd.v28.i8.308