Der Perlentaucher unter den Buchläden Eichendorff21

**Andrea M. Isidori** is an Associate Professor of Endocrinology at the Endocrinology and Andrology Unit, Department of Experimental Medicine, Sapienza University of Rome, Italy. He serves on the Executive Committee of the European Academy of Andrology, as a member of the Scientific Commission of the Italian Society of Endocrinology, and participated in the 2015 International Consultation of Sexual Medicine. An associate editor of the journals "Endocrine" and the "European Journal of Endocrinology," Prof. Isidori has been honored with several international awards, including the International Society of Andrology (ISA) "Young Andrologist Award" and the Young Carrier Award from the Italian Society of Endocrinology. He has authored more than 120 international peer-reviewed publications and is listed in the Italian Top Scientists. He completed his training at the St Bartholomew's Hospital, Queen Mary University of London and Sapienza University - Policlinico Umberto I in Rome. He has published extensively on many aspects of advanced ultrasonography, pioneering the introduction of contrast-enhanced ultrasound and elastosonography for testicular disorders and neoplasms. **Andrea Lenzi** is a Full Professor of Endocrinology at the Department of Experimental Medicine, Sapienza University in Rome, Italy. Prof. Lenzi is President of both the Italian Society of Endocrinology and the Italian Committee of Biosafety, Biotechnology and Life Sciences. He is the Director of the Andrology Unit, Reproductive Physiopathology and Endocrine Diagnosis, and Coordinator of Endocrinology Laboratories at the Policlinico Umberto I University Hospital in Rome, Italy. Prof. Lenzi is President of the Italian National University Council and Director of the Interuniversity Research Centre for Experimental Andrology, having previously served as Secretary General of the International Society for Immunology of Reproduction (1999-2004), the Alps-Adria Society for Immunology of Reproduction (1998-2001), and the Executive Council of the European Academy of Andrology (2002-2010). A former President of the Italian Society of Andrology and Medical Sexology (2008-2010), he now serves on the editorial boards of several international scientific journals and has published more than 300 original papers in respected international journals.