Late responders and bias in questionnaire studies.
Osterlund
Anders
A
Hermann
Magnus
M
Runehagen
Arne
A
D000368:Aged; D015982:Bias; D006801:Humans; D017589:Immunization Programs / Q000706:statistics & numerical data; D007252:Influenza Vaccines / Q000008:administration & dosage*; D011795:Surveys and Questionnaires; D013548:Sweden
D007252:Influenza Vaccines