1. Department of Health Sciences; Gerontology Research Center; University of Jyväskylä; Jyväskylä Finland
2. Department of Public Health; University of Helsinki; Helsinki Finland
3. Institute for Molecular Medicine; University of Helsinki; Helsinki Finland
4. National Institute for Health and Welfare; Helsinki Finland
5. Myology Research Center; Institut de Myologie; Sorbonne Universités; UPMC University Paris 06; UMR974; INSERM U974; CNRS FRE 3617; F-75013 Paris France