Vrije Universiteit Brussel (VUB), Frailty in Aging (FRIA) Research Group, Laarbeeklaan 103, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Department of Gerontology, Laarbeeklaan 101, 1090 Brussels, Belgium.Vrije Universiteit Brussel (VUB), Frailty in Aging (FRIA) Research Group, Laarbeeklaan 103, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Department of Gerontology, Laarbeeklaan 101, 1090 Brussels, Belgium.Vrije Universiteit Brussel (VUB), Frailty in Aging (FRIA) Research Group, Laarbeeklaan 103, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Department of Gerontology, Laarbeeklaan 101, 1090 Brussels, Belgium.Vrije Universiteit Brussel (VUB), Skin Immunology & Immune Tolerance (SKIN) Research Group, Laarbeeklaan 103, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Dermatology, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium.Vrije Universiteit Brussel (VUB), Skin Immunology & Immune Tolerance (SKIN) Research Group, Laarbeeklaan 103, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Dermatology, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium.Vrije Universiteit Brussel (VUB), Frailty in Aging (FRIA) Research Group, Laarbeeklaan 103, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Department of Gerontology, Laarbeeklaan 101, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Dermatology, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium. Electronic address: Ivan.bautmans@vub.be.