Focus on qualitative methods: Using qualitative methods in intervention studies.
Res Nurs Health. 1996 Aug;19(4):359-64. doi: 10.1002/(SICI)1098-240X(199608)19:4<359::AID-NUR9>3.0.CO;2-H.
Res Nurs Health. 1996.
PMID: 8773558
Review.