Trials and fast changing technologies: the case for tracker studies.
Lilford
R J
RJ
Department of Public Health and Epidemiology, University of Birmingham, Birmingham B15 2TT.
Braunholtz
D A
DA
Greenhalgh
R
R
Edwards
S J
SJ
D003625:Data Collection; D005069:Evaluation Studies as Topic; D019317:Evidence-Based Medicine; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000639:trends; D018401:Sample Size