The findings showed that there was a dose-response relationship between the prevalence rate of osteofluorosis and fluoride content of indoor air, time of burning coal and so on.
The findings showed that there was a dose-response relationship between the prevalence rate of osteofluorosis and fluoride content of indoor air, time of burning coal and so on.
果说明,氟骨症患病率与室内空气氟、烧煤时间等存在着剂量——效应关系。