Additional Funding: Medical Research Council (MRC) [U.130059812]
Office of the Chief Scientific Adviser (CSO) [SPHSU1]
Glasgow Housing Association (GHA)/Wheatley Housing Group
Scottish Government (SCOTGOV) [16597-01]
NHS Health Scotland (NHS-HEALTH) and NHS Greater Glasgow & Clyde (NHSGGC)
University of Glasgow [16597-01].