Patients will return the completed documents to the investigator and be given an additional MAS-E to take home. In the Retest phase, patients will be asked to complete the MAS-E again exactly 14 days from the date of the Screen visit. The proxy will also be given an additional MAS-E and be asked to complete the MAS-E exactly 14 days from completion of the first MAS-E. The documents shall be returned to the clinic via U.S. mail on the same day of completion. It is not necessary to have a proxy to participate in this study.