00387nas a2200169   4500000000100000000000100001008004100002100001300043700001400056700001700070700001200087700001200099245007200111300001200183490000800195022001400203       2015                            d1 aD. Humes1 aA. Walker1 aJ. Blackwell1 aB. Hunt1 aJ. West00aVariation in the risk of venous thromboembolism following colectomy  a1629-380 v102  a0007-1323