Financial & competing interests disclosure
This work was supported by grants from the National Research Foundation of Korea (2011-0025320 to KM Kim) and World Class University program of the Ministry of Education, Science, and Technology and the National Research Foundation of Korea (No. R31-2008-000-10103-0) and the Proteogenomic Research Program through the National Research Foundation of Korea (to E.C.Yi). 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.