1. Evidence-Based Medicine Center, MOE Virtual Research Center of Evidence-based Medicine at Zunyi Medical College, Affiliated Hospital of Zunyi Medical College, Zunyi 563003, Guizhou, China
2. Department of Respiratory Medicine (Center for Evidence-Based and Translational Medicine of Major Infectious Diseases), Affiliated Hospital of Zunyi Medical College, Zunyi 563003, Guizhou, China
3. Grade 2012 students, Department of Public Health, Zunyi Medical College. Zunyi 563002, Guizhou, China
4. Department of Neurology, First People's Hospital of Zunyi City and Third Affiliated Hospital of Zunyi Medical College, Zunyi 563002, Guizhou, China
5. School of pharmacy, Zunyi Medical College, Zunyi 563003, Guizhou, China
6. Department of Oncology, Affiliated Hospital of Zunyi Medical College, Zunyi 563000, Guizhou, China
7. Department of Parasites, Zunyi Medical College, Zunyi 563003, Guizhou, China