1. University of Bristol; MRC Integrative Epidemiology Unit, UK Centre for Tobacco and Alcohol Studies, School of Experimental Psychology; 12a Priory Road Bristol UK BS8 1TU
2. University of Bristol; Bristol Medical School; Bristol UK
3. Lee Kong Chian School of Medicine, Nanyang Technological University; Centre for Population Health Sciences (CePHaS); Singapore Singapore
4. Catholic University of Croatia; Zagreb Croatia
5. Centre for Medical Informatics, Usher Institute of Population Health Sciences and Informatics, The University of Edinburgh; Allergy & Respiratory Research Group and Asthma UK Centre for Applied Research; Teviot Place Edinburgh UK EH8 9AG
6. University of Ljubljana; Department of Family Medicine, Faculty of Medicine; Ljubljana Slovenia