RT Journal Article SR Electronic T1 Paraesophageal hernia JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 37 OP 37-a DO 10.1503/cmaj.060952 VO 176 IS 1 A1 Joye Varghese A1 Venkataraman Jayanthi YR 2007 UL http://www.cmaj.ca/content/176/1/37.2.abstract