TY  - JOUR
PY  - 1977//
TI  - The importance of direct intervention
JO  - American journal of public health
A1  - Bergner, L.
SP  - 1135
EP  - 1136
VL  - 67
IS  - 12
N2  - <p>[Abstract unavailable]</p> <p>Language: en</p> 
LA  - en
SN  - 0090-0036
UR  - http://dx.doi.org/
ID  - ref1
ER  -