title: Abstracts from Japanese Journal of Hygiene(Nihon Eiseigaku Zasshi) vol. 53 no.2.
authors: Depertment of public health, school of education, Ibaraki University, Mito.
authors: T
authors: T
authors: Takizawa
authors: Y
authors: Y
authors: Nakagawa
authors: H
authors: H
authors: Takabayashi
authors: S
authors: S
authors: Takahasi
authors: K
authors: K
authors: Tatara
authors: H
authors: H
authors: Furuya
authors: H
authors: H
authors: Aikawa
authors: T
authors: T
authors: Hagino
authors: T
authors: T
authors: Yoshida
authors: K
authors: K
authors: Sakabe
authors: K
authors: K
authors: Murata
authors: R
authors: R
authors: Inaba
authors: H
authors: H
authors: Iwata
authors: H
authors: H
authors: Sato
authors: K
authors: K
authors: Suzuki
authors: S
authors: S
authors: Nakaji
authors: K
authors: K
authors: Sugawara
authors: M
authors: M
authors: Totsuka
authors: K
authors: K
authors: Sato
authors: H
authors: H
authors: Nishikawa
authors: H
authors: H
authors: Toyokawa
authors: K
authors: K
authors: Higashiguchi
authors: Y
authors: Y
authors: Morikawa
authors: K
authors: K
authors: Miura
authors: M
authors: M
authors: Nishijo
authors: M
authors: M
authors: Tabata
authors: K
authors: K
authors: Yoshita
authors: T
authors: T
authors: Sagara
authors: H
authors: H
authors: Nakagawa
authors: M
authors: M
authors: Xu
authors: Y
authors: Y
authors: Miura
authors: F
authors: F
authors: Nagao
authors: T
authors: T
authors: Muto
authors: K
authors: K
authors: Okumura
authors: T
authors: T
authors: Takanishi
authors: N
authors: N
authors: Kimura
authors: T
authors: T
authors: Ito
authors: Y
authors: Y
authors: Morotomi
authors: T
authors: T
authors: Itani
authors: K
authors: K
authors: Ueda
authors: M
authors: M
authors: Onomichi
authors: K
authors: K
authors: Harada
authors: T
authors: T
authors: Miyakita
authors: A
authors: A
authors: Ueda
authors: Y
authors: Y
authors: Nakazato
authors: Y
authors: Y
authors: Furumatsu
authors: K
authors: K
authors: Nakamura