Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai China;
Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology Wuhan China;
Tongji Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology Wuhan China;
The Second Affiliated Hospital of Soochow University Suzhou China;
Qilu Hospital affiliated to Shandong University Jinan China;
Nanjing Brain Hospital Nanjing China;
West China Hospital affiliated to Sichuan University Chengdu China;
First Affiliated Hospital of China Medical University Shenyang China;
Boehringer Ingelheim International Trading(Shanghai)Co Ltd Shanghai China;
Boehringer Ingelheim Pharmaceuticals Inc Ridgefield CT USA;
Boehringer Ingelheim France S.A.S Reims France;
Department of Neurology Ruijin Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China;
Parkinson’s disease; Pramipexole ER; Pramipexole IR; Non-inferiority; Unified Parkinson’s Disease Rating Scale(UPDRS); Safety;