RT Journal Article SR Electronic T1 Emphysematous cholecystitis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E81 OP E81 DO 10.1503/cmaj.110601 VO 184 IS 1 A1 Miguel F. Carrascosa A1 José R. Salcines-Caviedes YR 2012 UL http://www.cmaj.ca/content/184/1/E81.abstract AB