International Journal of Public Health,
comparing a web-based versus a paper version of a #sociodemographic #questionnaire http://link.springer.com/article/10.1007/s000…
comparing a web-based versus a paper version of a #sociodemographic #questionnaire http://link.springer.com/article/10.1007/s000…
comparing a web-based and paper versions of a socio-demographic questionnaire http://link.springer.com/article/10.1007/s00038-011…