Qualitative research and evidence based medicine.
Green
J
J
Health Services Research Unit, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK. j.green@lshtm.ac.uk
Britten
N
N
D001249:Asthma / Q000628:therapy; D003625:Data Collection; D003627:Data Interpretation, Statistical; D019317:Evidence-Based Medicine; D006801:Humans; D012106:Research