World Chinese Journal of Digestology, Volume 26, Issue 4,2018, Pages 250-255, doi:10.11569/wcjd.v26.i4.250
World Chinese Journal of Digestology, Volume 26, Issue 4,2018, Pages 263-269, doi:10.11569/wcjd.v26.i4.263
World Chinese Journal of Digestology, Volume 26, Issue 4,2018, Pages 276-281, doi:10.11569/wcjd.v26.i4.276
World Chinese Journal of Digestology, Volume 26, Issue 4,2018, Pages 256-262, doi:10.11569/wcjd.v26.i4.256