Ma Changqing, Limketkai Berkeley N, Montgomery Elizabeth A
Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Gastrointest Endosc. 2014 Dec;80(6):960-9. doi: 10.1016/j.gie.2014.09.009.