TY  - BOOK
AU  -  Wensing, Michel
AU  - Ullrich, Charlotte 
TI  - Foundations of health services research: principles, methods, and topic 
SN  - 978-3-031-30000-4
AV  - RA440.6 .F68 2023
PY  - 2023///
CY  - Switzerland
PB  - Springer
KW  - Health services research
KW  - Health services
ER  -