00464nas a2200181   4500000000100000000000100001008004100002100001400043700001200057700001200069700001400081700001400095700001500109245012500124300001100249490000800260022001400268       2016                            d1 aA. Walker1 aJ. West1 aT. Card1 aC. Crooks1 aC. Kirwan1 aM. Grainge00aWhen are breast cancer patients at highest risk of venous thromboembolism? A cohort study using English health care data  a849-570 v127  a0006-4971