1. 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