TY  - RPRT
TI  - Combining qualitative and quantitative research methods: considering the possibilities for enhancing the study of chronic diseases.
AU  - A L Casebeer
AU  - M J Verhoef
PY  - 1997
UR  - https://pubmed.ncbi.nlm.nih.gov/9375260/
ID  - 9375260
ER  -