1. University of Oxford, John Radcliffe Hospital; Department of Cardiovascular Medicine; Oxford UK OX3 9DU
2. Warwick Medical School, University of Warwick; Division of Health Sciences; Coventry Warwickshire UK CV4 7AL
3. UK Cochrane Centre; National Institute for Health Research Summertown Pavilion, Middle Way Oxford Oxfordshire UK OX2 7LG
4. University of Birmingham; Cancer Research UK Clinical Trials Unit (CRCTU), School of Cancer Sciences; Birmingham UK B15 2TT
5. CIBER Epidemiología y Salud Pública (CIBERESP); Iberoamerican Cochrane Centre, Biomedical Research Institute Sant Pau (IIB Sant Pau); Sant Antoni Maria Claret 171 Edifici Casa de Convalescència Barcelona Catalunya Spain 08041
6. CIBER Epidemiología y Salud Pública (CIBERESP) - Universitat Autònoma de Barcelona; Iberoamerican Cochrane Centre - Biomedical Research Institute Sant Pau (IIB Sant Pau); Sant Antoni Maria Claret, 167 Pavilion 18 (D-13) Barcelona Catalunya Spain 08025
7. Hospital Universitario de la Paz, Universidad Autónoma de Madrid; Instituto de Investigacion IdiPAZ, Red Espanola de Investigacion Cardiovascular RD/12/0042/0008; Diego De Leon 62 Planta 9 Madrid Spain 28006
8. University of Exeter Medical School; NIHR Exeter Clinical Research Facility; Exeter UK