ty -jour au -muthiah，Karuppan Chetty au -enns，Robert au -Armstrong，David Au -Noble，Angela au -Gray，James au -Sinclair -sinclair，Paul au -Colacino，Palma au- palma au-/01/01 TI - A Survey of the Practice of After-Hours and Emergency Endoscopy in Canada SP - 951071 VL - 26 AB - SN - 2291-2789 UR - https://doi.org/10.1155/2012/951071 DO -10.1155/2012/951071 JF-加拿大胃肠病学杂志PB -Pulsus Group Inc Inc KW -ER-