TY  - RPRT
TI  - Clinical research methods for the new millenium.
AU  - B G Charlton
PY  - 1999
DO  - 10.1046/j.1365-2753.1999.00182.x
UR  - https://pubmed.ncbi.nlm.nih.gov/10471235/
ID  - 10471235
ER  -