Evaluation of the effectiveness of low-level laser therapy on proliferation of fibroblasts isolated from chronic wounds in human in vitro oleh Minh-Hoang Phan, Bich-Phuong Nguyen-Thi, Van-Han Dinh, Thi-Huong Nguyen, Ngoc-Nga Pham-Thi, Hong-Ha Nguyen, Trung-Son Le