TY  - RPRT
TI  - Principles of screening.
AU  - C Nielsen
AU  - R S Lang
PY  - 1999
DO  - 10.1016/s0025-7125(05)70169-3
UR  - https://pubmed.ncbi.nlm.nih.gov/10584597/
ID  - 10584597
ER  -