TY  - RPRT
TI  - Interpretation and bias in case-crossover studies.
AU  - D A Redelmeier
AU  - R J Tibshirani
PY  - 1997
DO  - 10.1016/s0895-4356(97)00196-0
UR  - https://pubmed.ncbi.nlm.nih.gov/9393384/
ID  - 9393384
ER  -