Masato Shirai, Keisuke Ishikawa, Ippei Hiramatsu, Kazuhiko Mizushima, Takamitsu Tsuru, Makoto Kurosawa, Akimasa Kure, Yuka Uesaka, Taiji Nozaki, Akira Tsujimura. The Men’s Training Cup Keep Training: a masturbation aid improves intravaginal ejaculatory latency time and Erection Hardness Score in patients who are unable to delay ejaculation. Sexual Medicine. 2023. 11. 1
Ippei Hiramatsu, Akira Tsujimura, Miho Miyoshi, Taiki Ogasa, Yuto Miyoshi, Keisuke Ishikawa, Yuka Uesaka, Taiji Nozaki, Masato Shirai, Hiroshi Kiuchi, et al. Maximum Flow Rate is Lowest in the Early Morning in Hospitalized Men With Nocturia Evaluated Over 24 Hours by Toilet Uroflowmetry. Urology. 2022
Masato Shirai, Yuto Miyoshi, Taiki Ogasa, Miho Miyoshi, Keisuke Ishikawa, Ippei Hiramatsu, Yuka Uesaka, Taiji Nozaki, Taro Koyama, Akira Tsujimura. Oral Testofen, L-Citrulline, Resveratrol, and Caffeine Supplement Drink Improves Sexual Function in Men with Phosphodiesterase 5 Inhibitors: Randomized, Double-Blind, Placebo-Controlled Crossover Pilot Study. The world journal of men's health. 2021. 39. 4. 733-739