Correction: Cognitive Improvement during Treatment for Mild Alzheimer's Disease with a Chinese Herbal Formula: A Randomized Controlled Trial

• Yulian Zhang, 
• Cuiru Lin, 
• Linlin Zhang, 
• Yuanwu Cui, 
• Yun Gu, 
• Jiakui Guo, 
• Di Wu, 
• Qiang Li, 
• Wanshan Song