Reporting current, past, and changed health status. What we know about distortion.
Herrmann
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National Center for Health Statistics, Office of Research and Methodology, Hyattsville, MD 20782, USA.
D006304:Health Status; D006801:Humans; D011939:Mental Recall; D017063:Outcome Assessment, Health Care; D015203:Reproducibility of Results; D012107:Research Design; D012189:Retrospective Studies