[1] Univ Putra Malaysia, Fac Med & Hlth Sci, Dept Family Med, Serdang, Malaysia
[2] Univ Putra Malaysia, HPUPM Teaching Hosp, Clin Res Unit, Persiaran MARDI UPM,Hosp Pengajar, Serdang, Malaysia
[3] Univ Putra Malaysia, Fac Med & Hlth Sci, Dept Dietet, Serdang, Malaysia
[4] Univ Malaya, Fac Med, Dept Primary Care Med, Kuala Lumpur, Malaysia
[5] Leicester Diabet Ctr, Natl Inst Hlth Res Appl Res Collaborat East Midlan, Leicester, England
[6] Univ Leicester, Leicester Gen Hosp, Diabet Res Ctr, Leicester, England
[7] Univ Putra Malaysia, Fac Med & Hlth Sci, Dept Family Med, Serdang, Malaysia