| Medical University of Vienna,Center for Disorders of Sex Development / Dpt. of Pediatrics1. | Austria | Vienna | Stefan Riedl, Diana-Alexandra Ertl |
| Klinikum Wels-Grieskirchen,Center for Pediatric Endocrinology / Dpt. of Pediatrics1. | Austria | Wels | Walter Bonfig |
| Cliniques universitaires de Bruxelles – Hôpital Erasme | Belgio | Brussel | Anne Delbaere, Cécile Brachet |
| Cliniques universitaires Saint-Luc | Belgio | Brussel | |
| UZ Brussels | Belgio | Brussel | Inge Gies |
| Ghent University Hospital | Belgio | Ghent | Martine Cools, Guy T'Sjoen |
| UMHAT “Sveta Marina” (Varna) | Bulgaria | Varna | Violeta Iotova, Vilhelm Madenov, Teodora Karamfilova |
| Department of Molecular Genetics, Function and Therapy, The Cyprus Institute of Neurology and Genetics1. | Cipro | Nicosia | Leonidas Phylactou, Vassos Neocleous, Nicos Skordis |
| Aarhus University Hospital | Danimarca | Aarhus | Claus H. Gravholt |
| Copenhagen University Hospital, Rigshospitalet | Danimarca | Copenhagen | Anders Juul |
| Odense Universitetshospital | Danimarca | Odense | Henrik Christesen, Marianne Skovsager Andersen |
| Tartu University Hospital | Estonia | Tartu | Vallo Tillmann |
| HUS Helsinki University Hospital, Hospital District of Helsinki and Uusimaa (EndoERN_FIN) | Finlandia | Helsinki | Camilla Schalin-Jäntti, Päivi Miettinen |
| Hospices Civils de Lyon | Francia | Lyon | Pierre Mouriquand, Gérald Raverot |
| CHU Angers | Francia | Angers | Patrice Rodien |
| Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals | Francia | Paris | Sophie Christin-Maitre, Laetitia Martinerie |
| Assistance Publique- Consortium Pitie Salpêtrière Hospital, Necker Enfants Malades Hospital, Institut Mutualiste Montsouris – Rare Reproductive Endocrinology and Gynaecology Diseases (PGR) | Francia | Paris | Philippe Touraine, Michel Polak |
| Hôpital Bicêtre | Francia | Paris | Philippe Chanson |
| Charité Universitätsmedizin Berlin | Germania | Berlin | Peter Kühnen, Heiko Krude |
| Universitätsklinikum Schleswig-Holstein | Germania | Lubeck | Olaf Hiort, Paul-Martin Holterus, Judith Gebauer |
| Ludwig-Maximilian-University Munich | Germania | Munchen | Nicole Reisch, Matthias Auer |
| Universitätsklinikum Münster | Germania | Munster | Julia Rohayem, |
| Katholisches Klinikum Bochum | Germania | Bochum | Corinna Grasemann, Annette Richter-Unruh |
| Universitätsklinikum Ulm (Ulm University Medical Center) | Germania | Ulm | Martin Wabitsch, Julia von Schnurbein |
| Beaumont Hospital | Irlanda | Dublin | Mark Sherlock, Susan O'Connell |
| Azienda Ospedaliera Sant’Orsola Malpighi | Italia | Bologna | Alessandra Gambineri, Federico Baronio, Lilia Baldazzi |
| University Hospital Florence (Firenze) | Italia | Florence | Csilla Krausz, Giulia Rastrelli |
| Ospedale San Raffaele | Italia | Milan | Gianni Russo, Andrea Giustina, Manuela Fortunato |
| Istituto Auxologico Italiano – Istituto di Ricovero e Cura a Carattere Scientifico | Italia | Milano | Luca Persani, Marco Bonomi, Biagio Cangiano, Elena Galazzi |
| Azienda Ospedaliera Universitaria “Federico II”, Napoli | Italia | Napels | Rosario Pivonello, Mariacarolina Salerno, Donatella Capalbo, Raffaella Di Mase |
| Azienda Ospedaliera di Padova (AOP) | Italia | Padova | Carla Scaroni, Laura Guazzarotti, Maurizio Iacobone, Caterina Mian |
| Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino | Italia | Turin | Luisa Desanctis, Giovanna Motta, Roberta Giordano, Patrizia Matarazzo |
| IRCCS Istituto Giannina Gaslini, Genova | Italia | Genova | Mohamad Maghnie, Giuseppe D'Annunzio |
| Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano | Italia | Milan | Giovanna Mantovani, Claudia Giavoli |
| AOU di Modena | Italia | Modena | Vincenzo Rochira, Sara De Vincentis |
| AOU Università degli Studi della Campania “Luigi Vanvitelli”, Napoli | Italia | Naples | Katherine Esposito, Emanuele Miraglia Del Giudice |
| AOUI di Verona | Italia | Verona | Franco Antoniazzi, Paolo Cavarzere |
| Childrens Clinical University Hospital1. | Lettonia | Rīga | Iveta Dzivite-Krisane, Inara Kirillova |
| Hospital of Lithuanian University of Health Sciences Kauno Klinikos | Lituania | Kaunas | Jonas Ceponis, Romualdas Tomas Preiska |
| Amsterdam UMC, location VUMC | Paesi Bassi | Amsterdam | Martin den Heijer, Baudewijntje Kreukels |
| University Medical Center Groningen | Paesi Bassi | Groningen | Thera Links |
| Leiden University Medical Center | Paesi Bassi | Leiden | |
| Radboud University Nijmegen Medical Center – Amalia’s children Hospital incluso | Paesi Bassi | Nijmegen | Hedi Claahsen |
| Erasmus MC: University Medical Center Rotterdam | Paesi Bassi | Rotterdam | Leendert Looijenga |
| Saint John Paul II Upper Silesian Child Health Centre, Public Clinical Hospital no.6 of the Medical University of Silesia in Katowice | Polonia | Katowice | Aneta Gawlik, Aleksandra Antosz |
| Karol Jonscher’s Clinical Hospital of Poznan University of Medical Sciences | Polonia | Poznan | Marek Niedziela, Monika Obara-Moszynska |
| University Hospital Motol | Repubblica Ceca | Prague | Klara Rozenkova, Jana Malikova |
| Spitalul Clinic de Urgenta pentru Copii, Cluj-Napoca | Romania | Cluj-Napoca | Simona Bucerzan, Camelia Alkhzouz |
| National Institute of Children’s Diseases, Dept. of Paediatrics of Medical Faculty Comenius University1. | Slovacchia | Bratislava | Ludmila Kostalova, Eva Vitariusova |
| University Hospital Martin, Dept of Paediatrics of Jessenius Medical Faculty Comenius University1. | Slovacchia | Martin | Jarmila Vojtková |
| University Medical Centre Ljubljana | Slovenia | Ljubljana | Magdalena Avblej Stefanija |
| Hospital Universitari Vall d’Hebron | Spagna | Barcelona | Maria Clemente |
| Karolinska University Hospital | Svezia | Stockholm | Anna Nordenström, Henrik Falhammer, Angelica Hirschberg |
| Sahlgrenska University Hospital | Svezia | Gothenburg | Gudmundur Johannsson, Jovanna Dahlgren |