Effectiveness and Safety of Probiotics for Patients with Constipation-Predominant Irritable Bowel Syndrome: A Systematic Review and Meta-Analysis of 10 Randomized Controlled Trials oleh Xue Shang, Fen-Fen E, Kang-Le Guo, Yan-Fei Li, Hong-Lin Zhao, Yan Wang, Nan Chen, Tao Nian, Chao-Qun Yang, Ke-Hu Yang, Xiu-Xia Li