@misc{indiciae1b1719296f70, title = {Qualitative research: standards, challenges, and guidelines.}, author = {K Malterud}, year = {2001}, doi = {10.1016/s0140-6736(01)05627-6}, url = {https://pubmed.ncbi.nlm.nih.gov/11513933/}, note = {Source identifier: 11513933} }