TY  - RPRT
TI  - Cost effectiveness or catch 22?
AU  - A Langlands
PY  - 1992
DO  - 10.5694/j.1326-5377.1992.tb121595.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1640894/
ID  - 1640894
ER  -