1. Motor Impairment in PD: Relationship to Incident Dementia and Age Levy, Gilberto; Tang, Mingxin; Cote, Lucien J.; Louis, Elan D.; Alfaro, Brenda; Mejia-Santana, Helen; Stern, Yaakov; Marder, Karen 2000 Articles NeurologyParkinson's disease--PatientsDementiaAgingMovement disorders
2. Combined Effect of Age and Severity on the Risk of Dementia in Parkinson's Disease Levy, Gilberto; Schupf, Nicole; Tang, Mingxin; Cote, Lucien J.; Louis, Elan D.; Mejia-Santana, Helen; Stern, Yaakov; Marder, Karen 2002 Articles NeurologyDementiaParkinson's diseaseAging
3. Do risk factors for Alzheimer's disease predict dementia in Parkinson's disease? An exploratory study Levy, Gilberto; Tang, Ming-Xin; Cote, Lucien J.; Louis, Elan D.; Alfaro, Brenda; Mejia, Helen; Stern, Yaakov; Marder, Karen 2002 Articles NeurologyCognition
4. Memory and Executive Function Impairment Predict Dementia in Parkinson's Disease Levy, Gilberto; Jacobs, Diane; Tang, Mingxin; Cote, Lucien J.; Louis, Elan D.; Alfaro, Brenda; Mejia-Santana, Helen; Stern, Yaakov; Marder, Karen 2002 Articles Movement disordersParkinson's diseaseExecutive functions (Neuropsychology)DementiaNeurology
5. The Association of Incident Dementia with Mortality in PD Levy, Gilberto; Tang, Mingxin; Louis, Elan D.; Cote, Lucien J.; Alfaro, Brenda; Mejia-Santana, Helen; Stern, Yaakov; Marder, Karen 2002 Articles NeurologyParkinson's disease--PatientsCognitionDementiaMortality
6. Case-control study of the parkin gene in early-onset Parkinson disease Clark, Lorraine N.; Afridi, Shehla; Karlins, Eric; Wang, Yuanjia; Mejia-Santana, Helen; Harris, Juliette; Louis, Elan D.; Cote, Lucien J.; Andrews, Howard F.; Fahn, Stanley; Waters, Cheryl H.; Ford, Blair; Frucht, Steven; Ottman, Ruth; Marder, Karen 2006 Articles Neurosciences
7. Mild parkinsonian signs and plasma homocysteine concentration in community-dwelling elderly individuals Louis, Elan D.; Schupf, Nicole; Tang, Ming Xin; Marder, Karen; Luchsinger, Jose A. 2007 Articles Neurosciences
8. Mild Parkinsonian signs are associated with lower olfactory test scores in the community-dwelling elderly Louis, Elan D.; Marder, Karen; Tabert, Matthias H.; Devanand, Devangere P. 2008 Articles Neurosciences
9. Quantitative brain measurements in community-dwelling elderly persons with mild parkinsonian signs Louis, Elan D.; Brickman, Adam M.; DeCarli, Charles; Small, Scott A.; Marder, Karen; Schupf, Nicole; Brown, Truman R. 2008 Articles Neurosciences
10. Risk of Parkinson disease in carriers of parkin mutations : estimation using the kin-cohort method Wang, Yuanjia; Clark, Lorraine N.; Louis, Elan D.; Mejia-Santana, Helen; Harris, Juliette; Cote, Lucien J.; Waters, Cheryl H.; Andrews, Howard F.; Ford, Blair; Frucht, Steven; Fahn, Stanley; Ottman, Ruth; Rabinowitz, Daniel; Marder, Karen 2008 Articles Neurosciences
11. Motor phenotype of LRRK2 G2019S carriers in early-onset Parkinson disease Alcalay, Roy Nissim; Mejia-Santana, Helen; Tang, Ming Xin; Rosado, Llency E.; Verbitsky, Miguel; Kisselev, Sergey; Ross, Barbara M.; Louis, Elan D.; Comella, Cynthia L.; Colcher, Amy; Jennings, Danna; Nance, Martha A.; Bressman, Susan; Scott, William K.; Tanner, Caroline; Mickel, Susan F.; Andrews, Howard F.; Waters, Cheryl H.; Fahn, Stanley; Cote, Lucien J.; Frucht, Steven; Ford, Blair; Rezak, Michael; Novak, Kevin; Friedman, Joseph H.; Pfeiffer, Ronald; Marsh, Laura; Hiner, Bradley; Siderowf, Andrew; Van Vliet, Elise A.; Ottman, Ruth; Clark, Lorraine N.; Marder, Karen 2009 Articles Neurosciences
12. Genome-Wide association study identifies candidate genes for Parkinson's disease in an Ashkenazi Jewish population Liu, Xinmin; Cheng, Rong; Verbitsky, Miguel; Kisselev, Sergey; Browne, Andrew; Mejia-Santana, Helen; Louis, Elan D.; Cote, Lucien J.; Andrews, Howard F.; Waters, Cheryl H.; Ford, Blair; Frucht, Steven; Fahn, Stanley; Marder, Karen; Clark, Lorraine N.; Lee, Joseph H. 2011 Articles GeneticsNeurosciences