Concurrent administration of donepezil HCl and levodopa/carbidopa in patients with Parkinson's disease: assessment of pharmacokinetic changes and safety following multiple oral doses
Clinical Pharmacology,; Biometrics Biostatistics,; Clinical Research, and; Research and Development, Eisai Medical Research Inc., Ridgefield Park, NJ, USA and; Pivotal Research Centers, Peoria, AZ, USA