World Chinese Journal of Digestology, Volume 28, Issue 14,2020, Pages 581-586, doi:10.11569/wcjd.v28.i14.581
World Chinese Journal of Digestology, Volume 28, Issue 14,2020, Pages 628-636, doi:10.11569/wcjd.v28.i14.628
World Chinese Journal of Digestology, Volume 28, Issue 14,2020, Pages 594-604, doi:10.11569/wcjd.v28.i14.594
World Chinese Journal of Digestology, Volume 28, Issue 14,2020, Pages 605-616, doi:10.11569/wcjd.v28.i14.605
World Chinese Journal of Digestology, Volume 28, Issue 14,2020, Pages 563-569, doi:10.11569/wcjd.v28.i14.563