00407nas a2200157   4500000000100000000000100001008004100002100001300043700001500056700001500071700001200086245011900098300001100217490000700228022001400235       2011                            d1 aD. Humes1 aK. Fleming1 aR. Spiller1 aJ. West00aConcurrent drug use and the risk of perforated colonic diverticular disease: a population-based case-control study  a219-240 v60  a0017-5749