Tiittala, Paula http://orcid.org/0000-0002-3927-2965
Ristola, Matti
Liitsola, Kirsi
Ollgren, Jukka
Koponen, Päivikki
Surcel, Heljä-Marja
Hiltunen-Back, Eija
Davidkin, Irja
Kivelä, Pia
Funding for this research was provided by:
Helsingin Yliopisto (FI), Doctoral Programme in Population Health
Article History
Received: 6 November 2017
Accepted: 11 March 2018
First Online: 20 March 2018
Ethics approval and consent to participate
: The Maamu study, including linkage to national registers, was evaluated and endorsed by the coordinating Ethics Committee of the Helsinki and Uusimaa Hospital District (325/13/03/00/2009). Written informed consent was obtained from the participants separately for the health interview, examination, and testing.
: Not applicable.
: The authors declare that they have no competing interests.
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