[A new design of annulus sizer].
Koyama K, Suzuki S, Kako N, Itoya O, Koyama M, Hasegawa T, Narita J, Takeuchi K, Takahashi S, Iwabuchi S, et al.
Koyama K, et al. Among authors: suzuki s.
Kyobu Geka. 1993 Apr;46(4):321-2.
Kyobu Geka. 1993.
PMID: 8468856
Japanese.