Unit Response and Costs in Web Versus Face-To-Face Data Collection: Comparison of Two Cross-sectional Health Surveys., Braekman, Elise, Demarest Stefaan, Charafeddine Rana, Drieskens Sabine, Berete Finaba, Gisle Lydia, Van der Heyden Johan, and Van Hal Guido , J Med Internet Res, 2022 01 07, Volume 24, Issue 1, (2022)