World Chinese Journal of Digestology, Volume 28, Issue 4,2020, Pages 135-143, doi:10.11569/wcjd.v28.i4.135
World Chinese Journal of Digestology, Volume 28, Issue 4,2020, Pages 113-121, doi:10.11569/wcjd.v28.i4.113
World Chinese Journal of Digestology, Volume 28, Issue 4,2020, Pages 129-134, doi:10.11569/wcjd.v28.i4.129
World Chinese Journal of Digestology, Volume 28, Issue 4,2020, Pages 122-128, doi:10.11569/wcjd.v28.i4.122
World Chinese Journal of Digestology, Volume 28, Issue 4,2020, Pages 144-148, doi:10.11569/wcjd.v28.i4.144