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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1974 1
1980 1
1990 1
1992 1
2024 0

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[Minimal brain dysfunction].
Ruel JM. Ruel JM. Vie Med Can Fr. 1974 Aug;3(8):758-60. Vie Med Can Fr. 1974. PMID: 4410153 French. No abstract available.
Survey of methadone patients in Canada.
Ruel JM, Hickey CP. Ruel JM, et al. Can J Public Health. 1990 Jul-Aug;81(4):272-4. Can J Public Health. 1990. PMID: 2207949