Primary Prevention
Interruption of the chain of causality at a point or points before a physiological or psychological abnormality is identifiable. ([http://dx.doi.org/10.1136/jech.55.7.452](http://dx.doi.org/10.1136/jech.55.7.452))
Interruption of the chain of causality at a point or points before a physiological or psychological abnormality is identifiable. ([http://dx.doi.org/10.1136/jech.55.7.452](http://dx.doi.org/10.1136/jech.55.7.452))