1. Technology Research and Development Laboratory, Research and Development Headquarters, Asahi Group Foods, Ltd., Moriya, Ibaraki 302‑0106, Japan
2. Medical Engineering Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Osaka Sangyo University, Osaka 574‑8530, Japan
3. Umeda Oak Clinic, Osaka 530‑0057, Japan
4. Department of Host Defense and Biochemical Research, Graduate School of Medicine, Juntendo University, Tokyo 113‑8421, Japan