Acknowledgments
We would like to thank the editor and the reviewers for taking the time to review our work. We would also like to thank Dr. Jackson Polak for sharing with us the program used in Arthur & Polak (2006). This study was supported by JSPS KAKENHI grant-in-aid for JSPS fellows #15J02148 to Masaki Suyama.
Author Contributions
The initial research was designed and conducted by M.S. and K.S. K.S. programmed and analyzed the data. M.S and K.S. wrote the manuscript.