Smithers, Lisa G. http://orcid.org/0000-0002-6585-7836
Sawyer, Alyssa C. P.
Chittleborough, Catherine R.
Davies, Neil M. http://orcid.org/0000-0002-2460-0508
Davey Smith, George
Lynch, John W. http://orcid.org/0000-0003-2781-7902
Article History
Received: 3 August 2016
Accepted: 28 September 2018
First Online: 5 November 2018
Competing interests
: The authors declare no competing interests.