疾病调查 meaning in Chinese

disease surveillance
morbidity survey
sickness survey

Investigation and analysis of 1130 cases of female breast diseases
1130名妇女乳腺疾病调查
Investigation and analysis of 7810 cases of female breast diseases
7810例妇女乳腺疾病调查分析
Investigation of regular gynecopathy in 1247 married teachers in shenzhen city
深圳市区1247名已婚女教师常见妇科疾病调查分析
Investigation and analysis of current situation of common chronic diseases in the communitive residents from northern china
中国北方地区社区居民常见慢性疾病调查分析