[Questionnaires--how to reach high response rates?].
Zwisler
Jon Eik
JE
Syddansk Universitet, Institut for Sundhedstjenesteforskning. jzwisler@health.sdu.dk
Jarbøl
Dorte E
DE
Lous
Jørgen
J
D003625:Data Collection / Q000379:methods* / Q000706:statistics & numerical data; D003627:Data Interpretation, Statistical; D006801:Humans; D009042:Motivation; D011177:Postal Service; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D011795:Surveys and Questionnaires