Chee Peng Hor a, b, c, ⁎
, Narwani Hussin d
, Saravanaa Nalliah e
, Way Ti Ooi e
, Xing Yi Tang e
, Sara Zachariah e
, Gurpreet pal Singh Jugindar Singh e
, Rosilawati Abdul Rani d
, Kunaraj Perumal e
, Wee Kooi Cheah d, e, ⁎ 
a Institute for Clinical Research, National Institutes of Health, Blok D, No 1, Jalan Setia Murni U13/ 52, Seksyen U13, Setia Alam, 40170 Shah Alam, Selangor, Malaysia
b Clinical Research Centre, Seberang Jaya Hospital, Jalan Tun Hussein Onn, Seberang Jaya, 13700, Permatang Pauh, Pulau Pinang
c Department of Medicine, Kepala Batas Hospital, Jalan Bertam 2, 13200, Kepala Batas, Penang, Malaysia
d Clinical Research Centre, Taiping Hospital, Jalan Taming Sari, 34000, Taiping, Perak, Malaysia
e Department of Medicine, Taiping Hospital, Jalan Taming Sari, 34000, Taiping, Perak, Malaysia