Institution: | 1. Pharmaceutical Research Laboratories, Meiji Seika Kaisha, Ltd., Morooka-cho, Kohoku-ku, 222, Yokohama, Japan 2. Pharmaceutical Development Laboratories, Meiji Seika Kaisha Ltd., Horikawa-cho, Saiwai-ku, 210, Kawasaki, Japan 3. Biogen S.A., P.O. Box, CH-1211, Geneva 24, Switzerland
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