For instance, if a country concerned still employs traditional systems which, in the light of more modern techniques, appear to be detrimental to public health, it may be desirable to change patterns of behaviour in, say, nutrition or hygiene.
For instance, if a country concerned still employs traditional systems which, considering more modern techniques, appear to be detrimental to public health, it may be desirable to change patterns of behaviour in, say, nutrition or hygiene.