An Efficacy and Safety Study of Osmotic Release Oral System (OROS) Methylphenidate in Participants With Attention Deficit Hyperactivity Disorder (ADHD) The purpose of this study is to evaluate the safety and efficacy of Osmotic Release Oral System (OROS) methylphenidate in participants with Attention Deficit Hyperactivity Disorder (ADHD).

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A study to evaulate the most favourable treatment dose in childrens and adolescents with Attention-Deficit Hyperactivity Disorder The purpose of this study is to evaluate the optimal dosages of Osmotic Release Oral System (OROS) methylphenidate in participants with Attention Deficit Hyperactivity Disorder (ADHD).

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An Efficacy Study of Osmotic Release Oral System (OROS) Methylphenidate in Participants With Attention-Deficit/Hyperactivity Disorder (ADHD) The purpose of this study is to evaluate the efficacy, tolerability and effects of Osmotic Release Oral System (OROS) methylphenidate hydrochloride (HCl) on learning skill changes in Korean participan...

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