1. Latvian Biomedical Research and Study Centre, Riga, Latvia.
2. Latvian Centre of Cardiology, Pauls Stradins Clinical University Hospital, Riga, Latvia.
3. Latvian Research Institute of Cardiology, University of Latvia, Riga, Latvia.
4. Faculty of Medicine, University of Latvia, Riga, Latvia.
5. Department of Endocrinology, Pauls Stradins Clinical University Hospital, Riga, Latvia.