Financial & competing interests disclosure
This work was supported by research funds from an NRF Engineering Research Center grant of the South Korean government (2011-0030075) and Ministry of Science, ICT and Future Planning (MSIP), South Korea, under the ‘IT Consilience Creative Program’ (NIPA-2013-H0203-13-1001) supervised by the National IT Industry Promotion Agency (NIPA). 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.