Fukushima Medical University School of Medicine, Fukushima, Japan.
Address correspondence and reprint requests to Shinichi Kikuchi, MD, PhD, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan; E-mail: email@example.com
The manuscript submitted does not contain information about medical device(s)/drug(s).
No funds were received in support of this work.
No relevant financial activities outside the submitted work.