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Hiroyuki Shimizu, Hiromu Yoshida, Andi Utama, Takashi Nakayama, Takayuki Saito, Kanako Watanabe, Setsuko Iizuka, Shinji Noda, Tetsuo Yoneyama, Tatsuo Miyamura. "Surveillance of poliovirus-isolates in Japan, 2002." Japanese journal of infectious diseases (Print) 56.5-6 218-9