TY  - RPRT
TI  - [Regional differences in hospital utilization].
AU  - A Sarría Santamera
AU  - J M Sendra Gutiérrez
DO  - 10.1016/s0213-9111(93)71135-8
UR  - https://pubmed.ncbi.nlm.nih.gov/8320047/
ID  - 8320047
ER  -