Number | Date | Country | Kind |
---|---|---|---|
62-267953 | Oct 1987 | JPX | |
62-331259 | Dec 1987 | JPX | |
63-5415 | Jan 1988 | JPX |
Number | Date | Country |
---|---|---|
2509155 | Feb 1975 | DEX |
3322574 | Nov 1983 | DEX |
2153821 | Aug 1985 | GBX |
Entry |
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The Lancet, Jun. 27, 1987, pp. 1470-1472. |
Nature, vol. 316; Jul. 11, 1985, Richardson et al., pp. 126-131. |