1 Department of Internal Medicine, VU University Medical Centre, Amsterdam, Netherlands.
2 Centre for Population Health Sciences (CePHaS), Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232.
3 Centre for Population Health Sciences (CePHaS), Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232 josip.car@ntu.edu.sg.
4 Global eHealth Unit, Department of Primary Care and Public Health, School of Public Health, Imperial College London, London W6 8RP, UK.