Dementia Drugs Market, By Drug Class (MAO Inhibitors, Cholinesterase Inhibitors, Glutamate Inhibitor, and Others), By Indication (Alzheimer’s Disease Dementia, Lewy Body Dementia, Parkinson Disease Dementia, and Others), By Route of Administration (Oral, Intravenous, and Others), By Distribution Channel (Hospital Pharmacies, Retail Pharmacies, and Online Pharmacies), By Geography (North America, Latin America, Asia Pacific, Europe, Middle East, and Africa)