Financial & competing interests disclosure
WP Yong is supported by the National Medical Research Council (NMRC) Translational & Clinical Research (TCR) Flagship Program (NMRC/TCR/009-NUHS/2013). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.