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https://scholar.google.com/scholar_lookup?title=How%20efficacious%20and%20safe%20is%20short-acting%20methylphenidate%20for%20the%20treatment%20of%20attention-deficit%20disorder%20in%20children%20and%20adolescents?%20A%20meta-analysis&author=Schachter,+H.M.&author=Pham,+B.&author=King,+J.&author=Langford,+S.&author=Moher,+D.&publication_year=2001&journal=CMAJ&volume=164&pages=1475%E2%80%931488