Received: 2 April 2019
Accepted: 29 August 2019
First Online: 9 September 2019
Ethics approval and consent to participate
: This study was approved by respective hospitals’ ethics committee of University Malaya Medical Center (MECID.No2018224–6046), Subang Jaya Medical Centre (MECID.No201612.6), and Pantai Hospital Kuala Lumpur (MECID.Nomms/MDAC/9397-OGM). The study ethic for Hospital Tengku Ampuan Afzuan Kuantan, Beacon International Specialist Centre and Gleneagles Hospital Penang was approved by National Medical Research Center, Ministry of Health Malaysia [MRECID.NoKKM.NIHSEC.P18–800 (6)]. All with waiver of informed consent.
: Not applicable.
: The authors declare that they have no competing interests.