On misclassification of smoking.
Keil
U
U
Stieber
J
J
Filipiak
B
B
Löwel
H
H
Wichmann
H E
HE
D015982:Bias; D002965:Classification; D003627:Data Interpretation, Statistical; D016021:Epidemiologic Studies; D006306:Health Surveys; D006801:Humans; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects / Q000453:epidemiology*