Guidelines for Thalassemia prevention and control programme 并列题名：Guidelines for Thalassemia prevention and control programme Guideline for comprehensive prevention and control of cervical cancer 并列题名：Guideline for comprehensive prevention and control of cervical cancer Guide of aids prevention and control Health guidelines for guangzhou citizens on prevention and control of covid-19 health guidelines for guangzhou citizens on prevention and control of covid-19 Technical guide for disease prevention and control on dairy farms Youth myopia prevention and control manual Disaster prevention and control law