1. Department of Medicine ΙΙI; University Hospital Carl Gustav Carus at the TU Dresden; Dresden; The Netherlands
2. Program in Reproductive and Adult Endocrinology; Eunice Kennedy Shriver National Institute of Child Health and Human Development; National Institutes of Health; Bethesda; MD; USA
3. Faculty of Medicine; Institute for Medical Informatics and Biometry; Carl Gustav Carus; Dresden University of Technology; Dresden; Germany