König, D., Oesser, S., Scharla, S., Zdzieblik, D., & Gollhofer, A. (2018). Specific Collagen Peptides Improve Bone Mineral Density and Bone Markers in Postmenopausal Women-A Randomized Controlled Study. Nutrients, 10(1). https://doi.org/10.3390/nu10010097 (Original work published 2018)

Gruber, M., König, D., Holzhäuser, J., Castillo, D., , Jahn, R., … Werneck, H. Parental feeding practices and the relationship with parents in female adolescents and young adults with eating disorders: A case control study. PloS One, 15(11), e0242518. https://doi.org/10.1371/journal.pone.0242518 (Original work published 2020)