Li, Shuxia http://orcid.org/0000-0001-8095-3175
Lund, Jesper B. http://orcid.org/0000-0001-9483-1603
Christensen, Kaare http://orcid.org/0000-0002-5429-5292
Baumbach, Jan
Mengel-From, Jonas
Kruse, Torben
Li, Weilong
Mohammadnejad, Afsaneh
Pattie, Alison
Marioni, Riccardo E. http://orcid.org/0000-0003-4430-4260
Deary, Ian J.
Tan, Qihua http://orcid.org/0000-0003-3194-0030
Funding for this research was provided by:
Velux Fonden (000121540)
Article History
Received: 14 October 2019
Accepted: 7 April 2020
First Online: 28 April 2020
Ethics approval and consent to participate
: The MADT study was approved by the Regional Committees on Health Research Ethics for Southern Denmark (S-VF-19980072). The LSADT project has been approved by The Danish National Committee on Biomedical Research Ethics (journal VF 20040241). Written informed consent was obtained from all participants in the Danish twin studies. Ethics permissions for the LBC1921 study protocol were obtained from Lothian Research Ethics Committee for waves 1–3 (LREC/1998/4/183, LREC/2003/7/23, 1702/98/4/183) and Multi-Centre Research Ethics Committee for Scotland for waves 4–5 (10/MRE00/87). Written informed consent was obtained from all study participants. The studies were conducted in accordance with the principles of the Helsinki Declaration.
: Not applicable
: The authors declare that they have no competing interests.