Wijnhoven, H. A. H., Elstgeest, L. E. M., de Vet, H. C. W., Nicolaou, M., Snijder, M. B., & Visser, M. (2018). Development and validation of a short food questionnaire to screen for low protein intake in community-dwelling older adults: The Protein Screener 55+ (Pro(55+)). PLoS One.

Wijnhoven, Hanneke A. H., Liset E. M. Elstgeest, Henrica C. W. de Vet, Mary Nicolaou, Marieke B. Snijder, und Marjolein Visser. "Development and Validation of a Short Food Questionnaire to Screen for Low Protein Intake in Community-dwelling Older Adults: The Protein Screener 55+ (Pro(55+))." PLoS One 2018.

Wijnhoven, Hanneke A. H., et al. "Development and Validation of a Short Food Questionnaire to Screen for Low Protein Intake in Community-dwelling Older Adults: The Protein Screener 55+ (Pro(55+))." PLoS One 2018.