| Medical University of Vienna,Center for Rare Endocrinologic Diseases / Dpt. of Internal Medicine III,1. | Austria | Vienna | Greisa Vila |
| Klinikum Wels-Grieskirchen,Center for Pediatric Endocrinology / Dpt. of Pediatrics1. | Austria | Wels | Walter Bonfig |
| Cliniques universitaires Saint-Luc | Belgium | Brussel | Dominique Maiter |
| Hôpital Universitaire de Bruxelles (HUDERF-Erasme) | Belgium | Brussel | Cécile Brachet, Agnès Burniat, France Devuyst |
| UZ Brussels | Belgium | Brussel | Corina Andreescu, David Unuane |
| Centre Hospitalier Universitaire de Liège | Belgium | Liege | Albert Beckers, Patrick Petrossians, Adrian F. Daly |
| USHATE “ACAD IVAN Penchev” | Bulgaria | Sofia | Sabina Zaharieva, Atanaska Elenkova, Vladimir Vasilev |
| UMHAT “Sveta Marina” (Varna) | Bulgaria | Varna | Violeta Iotova, Mila Boyadzhieva, Yuliya Bazadarska |
| Department of Molecular Genetics, Function and Therapy, The Cyprus Institute of Neurology and Genetics1. | Cyprus | Nicosia | Leonidas Phylactou, Vassos Neocleous, Nicos Skordis |
| General University Hospital in Prague | Czechia | Prague | Michal Krsek, |
| University Hospital Motol | Czechia | Prague | Jan Lebl, Lukas Plachy |
| Aarhus University Hospital | Denmark | Aarhus | Jens Otto Lunde Jørgensen |
| Copenhagen University Hospital, Rigshospitalet | Denmark | Copenhagen | Anders Juul, , |
| Odense Universitetshospital | Denmark | Odense | Henrik Christesen, Marianne Skovsager Andersen |
| Tartu University Hospital | Estonia | Tartu | Vallo Tillmann, Vallo Volke |
| HUS Helsinki University Hospital, Hospital District of Helsinki and Uusimaa (EndoERN_FIN) | Finland | Helsinki | Camilla Schalin-Jäntti, Marianna Viukari |
| Assistance Publique – Hôpitaux de Marseille | France | Marseille | Thierry Brue |
| Hospices Civils de Lyon | France | Lyon | Gérald Raverot |
| Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals | France | Paris | Jérôme Bertherat, Juliane Léger, Irene Netchine, Sophie Christin-Maitre |
| Hôpital Bicêtre | France | Paris | Philippe Chanson |
| Charité Universitätsmedizin Berlin | Germany | Berlin | Dirk Schnabel, Christian Strasburger |
| University Hospital Essen – Center for Rare Endocrine Diseases | Germany | Essen | Nicole Unger, Cordula Kiewert, Ilonka Kreitschmann-Andermahr |
| Ludwig-Maximilian-University Munich | Germany | Munchen | Jochen Schopohl, Katharina Schilbach |
| Universitätsklinikum Tübingen | Germany | Tübingen | Gerhard Binder, Roland Schweizer |
| University Hospital Würzburg | Germany | Wuerzburg | Martin Fassnacht, Timo Deutschbein, Katrin Ergezinger |
| Aghia Sophia Children’s Hospital | Greece | Athens | Evangelia Charmandari, Maria Dolianiti |
| Evangelismos General Hospital | Greece | Athens | Georgia Ntali |
| Semmelweis University | Hungary | Budapest | Nikolette Szücs |
| Beaumont Hospital & Children’s Health Ireland | Ireland | Dublin | Mark Sherlock |
| IRCCS Azienda Ospedaliero-Universitaria di Bologna | Italy | Bologna | Federico Baronio, Danilo Ribichini, Valentina Assirelli, Alessandra Gambineri |
| Meyer Children’s Hospital Florence | Italy | Florence | Stefano Stagi |
| University Hospital Florence | Italy | Florence | Alessandro Peri, Benedetta Fibbi |
| IRCCS Istituto Giannina Gaslini, Genova | Italy | Genova | Mohamad Maghnie, Giuseppe D'Annunzio |
| IRCCS Ospedale Policlinico San Martino – Genova – Italy | Italy | Genova | Diego Ferone, Federico Gatto |
| AOU policlinico “G.Martino” Messina | Italy | Messina | Salvatore Cannavò, Francesco Ferraù, Malgorzata Gabriela Wasniewska, Tommaso Aversa |
| Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano | Italy | Milan | Giovanna Mantovani, Elisa Sala, Giulia Carosi |
| Istituto Auxologico Italiano – Istituto di Ricovero e Cura a Carattere Scientifico | Italy | Milan | Marco Bonomi, Giovanni Vitale, Luca Persani |
| Ospedale San Raffaele | Italy | Milan | Gianni Russo, Gabriella Pozzobon, Stefano Frara |
| AOU di Modena | Italy | Modena | Vincenzo Rochira, Sara De Vincentis |
| Azienda Ospedaliera Universitaria “Federico II”, Napoli | Italy | Naples | Rosario Pivonello, Renata Simona Auriemma, Mariacarolina Salerno, Carolina di Somma, Donatella Capalbo, Raffaella Di Mase |
| Azienda Ospedaliera di Padova (AOP) | Italy | Padova | Carla Scaroni, Laura Guazzarotti, Filippo Ceccato |
| Azienda Ospedaliero-Universitaria Policlinico Umberto I | Italy | Roma | Andrea Isidori |
| Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino | Italy | Turin | Luisa Desanctis, Silvia Grottoli, Patrizia Matarazzo |
| AOUI di Verona | Italy | Verona | Franco Antoniazzi, Paolo Cavarzere |
| Pauls Stradins Clinical University Hospital1. | Latvia | Riga | Lauma Jaunozola |
| Hospital of Lithuanian University of Health Sciences Kauno Klinikos | Lithuania | Kaunas | Ruta Kriksciuniene, Robertas Knispelis |
| Amsterdam UMC | Netherlands | Amsterdam | Alberto Pereira, Loren van der Hoeven, Nitash Zwaveling-Soonawala |
| University Medical Center Groningen | Netherlands | Groningen | Melanie van der Klauw |
| Leiden University Medical Center | Netherlands | Leiden | Nienke Biermasz |
| Radboud University Nijmegen Medical Center – including Amalia’s children Hospital | Netherlands | Nijmegen | Annenienke van de Ven |
| Erasmus MC: University Medical Center Rotterdam | Netherlands | Rotterdam | Sebastian Neggers |
| Oslo University Hospital HF1. | Norway | Oslo | Jens Bollerslev |
| Centro Hospitalar de Lisboa Norte, EPE | Portugal | Lisbon | Maria João Bugalho, Claudia Faria, , Ema Lacerda Nobre |
| Centro Hospitalar Universitario de São João, EPE | Portugal | Porto | Elisabete Rodrigues, Davide Carvalho |
| University Hospital Martin, Dept of Paediatrics of Jessenius Medical Faculty Comenius University1. | Slovakia | Martin | Jarmila Vojtková |
| University Medical Centre Ljubljana | Slovenia | Ljubljana | Tomaz Kocjan, Primoz Kotnik, Magdalena Avblej Stefanija, Jasna Šuput Omladič |
| Fundacio de Gestio Sanitaria Hospital de la Santa Creu i Sant Pau | Spain | Barcelona | Anna Aulinas, Queralt Asla |
| Hospital Universitari Vall d’Hebron | Spain | Barcelona | Maria Clemente, Ariadna Campos, Bettina Biagetti |
| Hospital Universitario Cruces | Spain | Bilbao | Sonia Gaztambide, Luis Castano, Itxaso Rica |
| Complejo Hospitalario Regional Virgen del Rocío | Spain | Sevilla | Alfonso Soto Moreno, Eva María Venegas Moreno |
| Sahlgrenska University Hospital | Sweden | Gothenburg | Gudmundur Johannsson, Jovanna Dahlgren |
| Karolinska University Hospital | Sweden | Stockholm | Charlotte Höybye, Maria Halldin Stenlid |
