1 Institute of Medical Psychology, Justus-Liebig-University, Gießen, Germany.
2 Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany.
3 CharitéCentrum 12 for Internal Medicine and Dermatology, Department of Psychosomatic Medicine and Psychotherapy, Charité-Universitätsmedizin Berlin, Berlin, Germany.
4 Clinics for Dermatology and Allergology, Justus-Liebig-University, Gießen, Germany.
5 Psychoneuroimmunology Laboratory, Department of Psychosomatic Medicine and Psychotherapy, Justus-Liebig-University, Gießen, Germany.