Author contribution
Ju-Seop Kang conceived and planned present study. Joo-Hyun Shon carried
out the clinical trial and collected data. Tae-Eun Kim analyzed the data
and discussed the result with Ju-Seop Kang and Joo-Hyun Shon. Tae-Eun
Kim wrote the manuscript. All the authors contributed to the final
version of the manuscript.