| 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 de Bruxelles – Hôpital Erasme | Belgium | Brussel | Cécile Brachet, Agnès Burniat, France Devuyst |
| Cliniques universitaires Saint-Luc | Belgium | Brussel | Dominique Maiter |
| UZ Brussels | Belgium | Brussel | 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 |
| MHAT “Sveta Marina” | 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 |
| Královské Vinohrady University Hospital in Prague | Czech Republic | Prague | Ludmila Brunerova |
| University Hospital Motol | Czech Republic | Prague | Jan Lebl, Lukas Plachy |
| Aarhus University Hospital | Denmark | Aarhus | Jens Otto Lunde Jørgensen |
| Copenhagen University Hospital, Rigshospitalet | Denmark | Copenhagen | Anders Juul, , |
| Tartu University Hospital | Estonia | Tartu | Vallo Tillmann, Vallo Volke |
| Assistance Publique – Hôpitaux de Marseille | France | Marseille | Thierry Brue |
| Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals | France | Paris | Jerome Bertherat, Juliane Léger, Irene Netchine, Sophie Christin-Maitre |
| Hôpital Bicêtre | France | Paris | Philippe Chanson |
| Charité Universitätsmedizin Berlin | Germany | Berlin | Joachim Spranger |
| 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 |
| University Hospital Würzburg | Germany | Wuerzburg | Martin Fassnacht, Timo Deutschbein, Katrin Ergezinger |
| Semmelweis University | Hungary | Budapest | Nikolette Szücs |
| Azienda Ospedaliera Sant’Orsola Malpighi | Italy | Bologna | Federico Baronio, Stefano Zucchini, Danilo Ribichini |
| IRCCS A.O.U San Martino – Genova – (IT5) | Italy | Genua | Diego Ferone, Federico Gatto |
| Ospedale San Raffaele | Italy | Milan | Gianni Russo, Gabriella Pozzobon, Stefano Frara |
| Istituto Auxologigo Italiano – Istituto di Ricovero e Cura a Carattere Scientifico | Italy | Milano | Luca Persani, Marco Bonomi, Giovanni Vitale |
| Azienda Ospedaliera Universitaria “Federico II”, Napoli | Italy | Napels | Rosario Pivonello, Carolina di Somma, Renata Simona Auriemma |
| Azienda Ospedaliera di Padova (AOP) | Italy | Padova | Carla Scaroni, Laura Guazzarotti, Filippo Ceccato |
| Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino | Italy | Turin | Luisa Desanctis, Silvia Grottoli, Patrizia Matarazzo |
| 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, location AMC | Netherlands | Amsterdam | Johannes Romijn, Madeleine Drent, Jantien Hoogmoed |
| University Medical Center Groningen | Netherlands | Groningen | Melanie van der Klauw |
| Leiden University Medical Center | Netherlands | Leiden | Nienke Biermasz, Alberto Pereira |
| 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 |
| 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 |
| Hospital Universitari Vall d’Hebron | Spain | Barcelona | Maria Clemente, Ariadna Campos, Bettina Biagetti |
| Hospital Universitario Cruces | Spain | Bilbao | Sonia Gaztambide, Luis Castano, Itxaso Rica |
| Karolinska University Hospital | Sweden | Stockholm | Charlotte Höybye, Maria Halldin Stenlid |
| University Hospitals Birmingham – NHS Foundation Trust | United Kingdom | Birmingham | Niki Karavitaki, Vrinda Saraff |
| University Hospitals Bristol – NHS Foundation Trust | United Kingdom | Bristol | Liz Crowne |
| NHS Greater Glasgow and Clyde Board | United Kingdom | Glasgow | Guftar Shaikh |
| Alder Hey Children’s Hospital – NHS Foundation Trust | United Kingdom | Liverpool | Jo Blair |
| Barts Health – NHS Foundation Trust | United Kingdom | London | Marta Korbonits |
| Great Ormond Street Hospital/UCLH – NHS Foundation Trust | United Kingdom | London | Mehul Dattani, Harshini Katugampola |
| Central Manchester University Hospitals – NHS Foundation Trust | United Kingdom | Manchester | Peter Clayton, Peter Trainer |
| University Hospital Southampton – NHS Foundation Trust | United Kingdom | Southampton | Justin Davies, Ma'en Al-Mrayat |