Kunz, C., Hower, J., Knoll, A., Ritzenthaler, K. L., & Lamberti, T. (2018). No improvement in vitamin D status in German infants and adolescents between 2009 and 2014 despite public recommendations to increase vitamin D intake in 2012. Eur J Nutr.

Kunz, Clemens, Jürgen Hower, Anette Knoll, Kristin L. Ritzenthaler, ja Thomas Lamberti. "No Improvement in Vitamin D Status in German Infants and Adolescents between 2009 and 2014 Despite Public Recommendations to Increase Vitamin D Intake in 2012." Eur J Nutr 2018.

Kunz, Clemens, et al. "No Improvement in Vitamin D Status in German Infants and Adolescents between 2009 and 2014 Despite Public Recommendations to Increase Vitamin D Intake in 2012." Eur J Nutr 2018.