title: Test result could mean different things.
authors.forename: Douglas
authors.initials: D
authors.lastname: Gourlay
mesh_terms: D000697:Central Nervous System Stimulants / Q000652:urine*; D002648:Child; D006801:Humans; D008774:Methylphenidate / Q000652:urine*; D015813:Substance Abuse Detection / Q000379:methods*
chemical_list: D000697:Central Nervous System Stimulants; D008774:Methylphenidate