| Ghent University Hospital | Belgium | Ghent | Martine Cools |
| MHAT „Sveta Marina“ | Bulgaria | Varna | Violeta Iotova |
| Университетска болница Motol | Czech Republic | Prague | Jan Lebl |
| Assistance Publique – Consortium Pitie Salpêtrière Hospital, Necker Enfants Malades Hospital, Institut Mutualiste Montsouris – Редки репродуктивни ендокринологични и гинекологични заболявания (PGR) | France | Paris | Philippe Touraine |
| Máxima Medisch Centrum | Netherlands | Veldhoven | Harm Haak |
| Maria Sklodowska-Curie National Research Institute of Oncology (MSCNRIO) | Polonia | Gliwice | Jolanta Krajewska |
| Cliniques universitaires de Bruxelles – Hôpital Erasme | Белгия | Brussel | Claudine Heinrichs |
| Cliniques universitaires Saint-Luc | Белгия | Brussel | Dominique Maiter |
| UZ Brussels | Белгия | Brussel | Inge Gies |
| UZ Leuven | Белгия | Leuven | Kristina Casteels |
| Centre Hospitalier Universitaire de Liège | Белгия | Liege | Albert Beckers |
| USHATE „ACAD IVAN Penchev“ | България | Sofia | Sabina Zaharieva |
| University Hospital Aachen | Германия | Aachen | Thomas Eggermann |
| Charité Universitätsmedizin Berlin | Германия | Berlin | Joachim Spranger |
| University Hospital Essen – Center for Rare Endocrine Diseases | Германия | Essen | Dagmar Fuehrer |
| Hannoversche Kinderheilanstalt, Diabetes Centre for Children and Adolescents | Германия | Hannover | Thomas Danne |
| Universitätsklinikum Schleswig-Holstein | Германия | Lubeck | Olaf Hiort |
| Otto-von-Guericke University, Med. Faculty – Central German Network for Rare diseases | Германия | Magdeburg | Klaus Mohnike |
| University Medical Center Mainz | Германия | Mainz | Dirk Prawitt |
| University Hospital Marburg | Германия | Marburg | Frederik Verburg |
| Ludwig-Maximilian-University Munich | Германия | Munchen | Nicole Reisch |
| Universitätsklinikum Münster | Германия | Munster | Julia Rohayem |
| University Hospital Würzburg | Германия | Wuerzburg | Martin Fassnacht |
| Aarhus University Hospital | Дания | Aarhus | Claus H. Gravholt |
| Copenhagen University Hospital, Rigshospitalet | Дания | Copenhagen | Anders Juul |
| Tartu University Hospitaу | Естония | Tartu | Vallo Tillmann |
| Hospital Sant Joan de Déu Barcelona | Испания | Barcelona | Roque Cardona-Hernandez |
| Hospital Universitari Vall d’Hebron | Испания | Barcelona | Diego Yeste |
| Hospital Universitario Cruces | Испания | Bilbao | Sonia Gaztambide |
| Azienda Ospedaliera Sant’Orsola Malpighi | Италия | Bologna | Alessandra Cassio |
| Meyer Children’s Hospital Florence | Италия | Florence | Sonia Toni |
| University Hospital Florence | Италия | Florence | Csilla Krausz |
| IRCCS A.O.U San Martino – Genova – (IT5) | Италия | Genua | Diego Ferone |
| Ospedale San Raffaele | Италия | Milan | Gianni Russo |
| Istituto Auxologigo Italiano – Istituto di Ricovero e Cura a Carattere Scientifico | Италия | Milano | Luca Persani |
| Azienda Ospedaliera Universitaria „Federico II“, Napoli | Италия | Napels | Annamaria Colao |
| Azienda Ospedaliera di Padova (AOP) | Италия | Padova | Carla Scaroni |
| Azienda Ospedaliera Universitaria Pisana – Obesity Centre, Endocrinology Unit | Италия | Pisa | Ferruccio Santini |
| Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino | Италия | Turin | Ezio Ghigo |
| Hospital of Lithuanian University of Health Sciences Kauno Klinikos | Литва | Kaunas | Rasa Verkausiene |
| Centre Hospitalier de Luxembourg | Люксембург | Luxemburg | Michael Witsch |
| University Hospitals Birmingham – NHS Foundation Trust | Обединеното Kралство | Birmingham | Neil Gittoes |
| University Hospitals Bristol – NHS Foundation Trust | Обединеното Kралство | Bristol | Liz Crowne |
| NHS Greater Glasgow and Clyde Board | Обединеното Kралство | Glasgow | Faisal Ahmed |
| Alder Hey Children’s Hospital – NHS Foundation Trust | Обединеното Kралство | Liverpool | Mohammed Didi |
| Barts Health – NHS Foundation Trust | Обединеното Kралство | London | Marta Korbonits |
| Great Ormond Street Hospital/UCLH – NHS Foundation Trust | Обединеното Kралство | London | Mehul Dattani |
| Central Manchester University Hospitals – NHS Foundation Trust | Обединеното Kралство | Manchester | Peter Clayton |
| University Hospital Southampton – NHS Foundation Trust | Обединеното Kралство | Southampton | Justin Davies |
| Public Pediatric Teaching Hospital | Полша | Warsaw | Agnieszka Szypowska |
| APDP – Diabetes Portugal | Португалски | Lisbon | João Raposo |
| Spitalul Clinic de Psihiatrie „Prof. dr. Alexandru Obregia“ | Румъния | Bucharest | Dana Craiu |
| Institute of Oncology „Prof dr. Ion Chiricuta“ CLUJ NAPOCA | Румъния | Cluj-Napoca | Doina Piciu |
| University Medical Centre Ljubljana | Словения | Ljubljana | Tadej Battelino |
| Semmelweis University | Унгария | Budapest | Miklos Toth |
| Assistance Publique – Hôpitaux de Marseille | Франция | Marseille | Thierry Brue |
| CHU Angers | Франция | Angers | Patrice Rodien |
| Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals | Франция | Paris | Jerome Bertherat |
| Assistance Publique – Consortium Pitie Salpêtrière – French Reference Centre за Синдром на Прадер-Уили | Франция | Paris | Christine Poitou |
| Hôpital Bicêtre | Франция | Paris | Philippe Chanson |
| Hôpital Universitaire Necker – Enfants malades | Франция | Paris | Michel Polak |
| CHU Toulouse | Франция | Toulouse | Maithe Tauber |
| Amsterdam-UMC, location AMC | Холандия | Amsterdam | Eric Fliers |
| University Medical Center Groningen | Холандия | Groningen | Thera Links |
| Leiden University Medical Center | Холандия | Leiden | Nienke Biermasz |
| Maastricht University Medical Center – Center for Thyroid Carcinoma | Холандия | Maastricht | Bas Havekes |
| Radboud University Nijmegen Medical Center – including Amalia’s children Hospital | Холандия | Nijmegen | Hedi Claahsen |
| Erasmus MC: University Medical Center Rotterdam | Холандия | Rotterdam | Robin Peeters |
| University Medical Center Utrecht – Dept of Endocrine Oncology | Холандия | Utrecht | Gerlof Valk |
| Královské Vinohrady University Hospital в Прага | Чешка република | Prague | Ludmila Brunerova |
| Karolinska University Hospital | Швеция | Stockholm | Anna Nordenström |