TY  - RPRT
TI  - Three approaches to qualitative content analysis.
AU  - Hsiu-Fang Hsieh
AU  - Sarah E Shannon
PY  - 2005
DO  - 10.1177/1049732305276687
UR  - https://pubmed.ncbi.nlm.nih.gov/16204405/
ID  - 16204405
ER  -