Methods Konstadina Griva National University of Singapore Yin Woan Vanessa Lee National University of Singapore Priyathanaa D/ O Kalyanasundram National University of Singapore Yung Seng Lee National University of Singapore National University Health System, Singapore Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research Luor Shyuan Maudrene Tan National University of Singapore Mohamed Amir National University of Singapore Eric Yin-Hao Khoo National University Health System, Singapore Hwee-Lin Wee National University of Singapore Sleep problems in patients with Type 2 Diabetes Mellitus in Singapore sleep problems in patients with Type 2 Diabetes Mellitus Griva et al.