Lack of effectiveness of a letter reminder for annual influenza immunization of asthmatic children.
Walter
E
E
Sung
J
J
Kahn Meine
E
E
Drucker
R P
RP
Clements
D A
DA
D001249:Asthma / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007252:Influenza Vaccines / Q000276:immunology*; D014611:Vaccination
D007252:Influenza Vaccines