**Acknowledgements**

We thank Sunway Internal Research Grant INT-2018-SHMS-SIHD-01 from Sunway University and National Cancer Council Malaysia (MAKNA) Cancer Research Award (CRA) 2016 (EXT-SIDS-SIHD-MAKNA-2017-01) for partly supporting this work. This work is also partly supported by Sunway Medical Centre Research Funds (SRC/002/2017/FR and SRC/003/2017/FR). Siew-Wai Pang, Noel Jacques Awi, and Hooi-Yeen Yap are recipients of Sunway University Research Scholarships.
