RT Journal Article SR Electronic T1 Epstein–Barr virus acute acalculous cholecystitis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1143 OP E1143 DO 10.1503/cmaj.79128 VO 193 IS 29 A1 Jacobus S. Vermaak YR 2021 UL http://www.cmaj.ca/content/193/29/E1143.abstract