title: Maintaining response rates in longitudinal studies: the care and nurture of respondents.
authors.forename: D S
authors.initials: DS
authors.lastname: Freedman
authors.forename: A
authors.initials: A
authors.lastname: Thornton
authors.forename: D
authors.initials: D
authors.lastname: Camburn
mesh_terms: D000569:Americas; D003625:Data Collection; D019049:Developed Countries; D009656:North America; D012106:Research; D012494:Sampling Studies; D014481:United States
keywords: Americas; Developed Countries; North America; Northern America; Research Methodology; Sampling Studies; Studies; Surveys; United States