TY  - RPRT
TI  - A primer on causality in research.
AU  - S Beyea
AU  - L Nicoll
PY  - 1999
DO  - 10.1016/s0001-2092(06)62360-0
UR  - https://pubmed.ncbi.nlm.nih.gov/11838097/
ID  - 11838097
ER  -