Tsuzuki, S., Akiyama, T., Matsunaga, N., Yahara, K., Shibayama, K., Sugai, M., & Ohmagari, N. (2020). Improved penicillin susceptibility of Streptococcus pneumoniae and increased penicillin consumption in Japan, 2013–18. PLoS One.

Tsuzuki, Shinya, Takayuki Akiyama, Nobuaki Matsunaga, Koji Yahara, Keigo Shibayama, Motoyuki Sugai, e Norio Ohmagari. "Improved Penicillin Susceptibility of Streptococcus Pneumoniae and Increased Penicillin Consumption in Japan, 2013–18." PLoS One 2020.

Tsuzuki, Shinya, et al. "Improved Penicillin Susceptibility of Streptococcus Pneumoniae and Increased Penicillin Consumption in Japan, 2013–18." PLoS One 2020.