Ammerlaan, J. W., van Os-Medendorp, H., Sont, J. K., Elsworth, G. R., & Osborne, R. H. (2017). Validation of the dutch version of the health education impact questionnaire (HEIQ) and comparison of the Dutch translation with the English, German and French HEIQ. Health Qual Life Outcomes.

Ammerlaan, Judy W., Harmieke van Os-Medendorp, Jacob K. Sont, Gerald R. Elsworth, and Richard H. Osborne. "Validation of the Dutch Version of the Health Education Impact Questionnaire (HEIQ) and Comparison of the Dutch Translation With the English, German and French HEIQ." Health Qual Life Outcomes 2017.

Ammerlaan, Judy W., et al. "Validation of the Dutch Version of the Health Education Impact Questionnaire (HEIQ) and Comparison of the Dutch Translation With the English, German and French HEIQ." Health Qual Life Outcomes 2017.