1. Department of Medical Sciences, Cardiology, Uppsala University, Sjukhusvägen 7, 752 09 Uppsala, Sweden
2. Department of Cardiology, Västerås Hospital, Sigtunagatan, 721 89 Västerås, Sweden
3. Department of Cardiology, Clinical Sciences, Lund University, Box 117, Skåne University Hospital, Block EA, 22100 Lund, Sweden
4. Pfizer AB Sverige, Vetenskapsvägen 10, Sollentuna, Sweden