Psychometric properties of the Malay version of the diabetes empowerment scale among Hospital Serdang type 2 diabetes mellitus patients using exploratory factor analysis by Ching, Siew Mooi, Yee, Anne, Lee, Ping Yein, Ramachandran, Vasudevan, Shum, Khai Mun, Ismael, Nur Fati’Izzati, Wan Sulaiman, Wan Aliaa, Hoo, Fan Kee, Foo, Yoke Loong, Lee, Kai Wei, Danaee, Mahmoud, Tan, Kit Aun