TY  - RPRT
TI  - Frequent ED users: patterns of use over time.
AU  - T Kne
AU  - R Young
AU  - L Spillane
PY  - 1998
DO  - 10.1016/s0735-6757(98)90166-8
UR  - https://pubmed.ncbi.nlm.nih.gov/9827738/
ID  - 9827738
ER  -