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Preoperative and postoperative assessments of these patients at 1 , 3 , 6 and 12 months follow - up , in " on " and " off " drug conditions , was carried out using Unified Parkinson ' s Disease Rating Scale , Hoehn and Yahr staging , England activities of daily living score and video recordings .
 Disease: Parkinson ' s Disease
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: Parkinson ' s Disease