1. 1) Ikuta K., Kohgo Y., Diagnosis and Treatment, 100 (Suppl), 410–415 (2012).
2. 2) Ministry of Health, Labour and Welfare. “The National Health and Nutrition Survey in Japan, 2019.”: 〈https://www.mhlw.go.jp/content/001066903.pdf〉, cited 7 February, 2023.
3. 3) Gereklioglu C., Asma S., Korur A., Erdogan F., Kut A., Pak. J. Med. Sci., 32, 604–607 (2016).
4. 4) Momoeda M., Obstet. Gynecol., 7, 871–877 (2021).
5. 5) Sano N., Akiyama Y., Ohkawa I., Ozaki S., Takizawa K., Nakajima Y., Bessho M., Watanabe R., Tajima T., Clin. Rep., 19, 588–592 (1985).