University Hospital Marburg, Marburg, Germany
University Hospital Geneva, Geneva, Switzerland
University Hospital Goettingen, Goettingen, Germany
Department of Dermatology and Allergology, Medical faculty of the RWTH Aachen, Aachen, Germany
Department of Dermatology and Allergology, Medical faculty of the RWTH Aachen, Aachen, Germany
Klinik for Dermatology and Allergology, medical faculty of the RWTH Aachen, Aachen, NRW, Germany
Pain Therapy Section, Dept of Orthopedic Surgery and Traumatology, University Hosp Heidelberg, Heidelberg, Germany
University Medical Care Center Mannheim, Dept of Anaesthesiology and Surgical Care Medicine, Mannheim, Germany
Clinic for Anaesthesiology and Supra-regional Center of Pain Therapy and Palliative Care, University Hosp Heidelberg, Heidelberg, Germany