Cheah, A. K. W.
Kangkorn, T.
Tan, E. H.
Loo, M. L.
Chong, S. J.
Article History
Received: 18 November 2017
Accepted: 24 January 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: Not applicable
: Formal written consent was obtained from all participants of the study.
: Dr. Tanasit Kangkorn is the inventor of the free application. All remaining authors declare no competing interests.