1 Department of Community Medicine, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia.
2 National Institute for Health Research Applied Research Collaboration-East Midlands, Leicester Diabetes Centre, Leicester, United Kingdom.
3 Diabetes Research Centre, Leicester General Hospital, University of Leicester, Leicester, United Kingdom.
4 Department Public Health and Primary Care/Leiden University Medical Center (LUMC)-Campus The Hague, Leiden University Medical Center, The Hague, Netherlands.
5 Department of Family Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (UPM), Serdang, Malaysia.
6 Clinical Research Unit, Hospital Pengajar Universiti Putra Malaysia (HPUPM Teaching Hospital), Persiaran Mardi - UPM (University Putra Malaysia), Serdang, Malaysia.