Fukuda, Y.
Itahara, M.
Kusumoto, S.
Higashi, T.
Takemura, K.
Mawatari, H.
Yusa, Y.
Yamamoto, T.
Kato, T.
Article History
Received: 31 December 1999
Revised: 2 August 2000
Accepted: 15 August 2000
First Online: 24 June 2014
Free to read: This content has been made available to all.