TY  - RPRT
TI  - Epidemiology for the uninitiated. Repeatability and validity.
AU  - G Rose
AU  - D J Barker
PY  - 1978
DO  - 10.1136/bmj.2.6144.1070
UR  - https://pubmed.ncbi.nlm.nih.gov/709223/
ID  - 709223
ER  -