00521nas a2200169   4500000000100000000000100001008004100002100001400043700001500057700002000072700001400092700001200106245020000118300001200318490000700330022001400337       2021                            d1 aE. Powell1 aI. Douglas1 aU. Gungabissoon1 aL. Smeeth1 aK. Wing00aReal-world effects of medications for stroke prevention in atrial fibrillation: protocol for a UK population-based non-interventional cohort study with validation against randomised trial results  ae0429470 v11  a2044-6055