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Zinc sulfate as an adjunct to methylphenidate for the treatment of attention deficit hyperactivity disorder in children: A double blind and randomized trial [ISRCTN64132371]

Shahin Akhondzadeh*, Mohammad-Reza Mohammadi and Mojgan Khademi

BMC Psychiatry 2004, 4:9  doi:10.1186/1471-244X-4-9

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