[1] Lanzhou University,Health Technology Assessment Center/Evidence
[2] Lanzhou University,Based Social Science Research Center, School of Public Health
[3] Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province,Evidence Based Medicine Center, School of Basic Medical Sciences
[4] Southern University of Science and Technology,School of Public Health and Emergency Management
[5] Gansu Provincial Cancer Hospital,undefined
[6] Gansu Provincial Cancer Hospital,undefined