| Cliniques universitaires Saint-Luc | Belgium | Brussel | Maria-Cristina Burlacu |
| Hôpital Universitaire de Bruxelles (HUDERF-Erasme) | Belgium | Brussel | Claudine Heinrichs, Bernard Corivlain |
| UZ Brussels | Belgium | Brussel | David Unuane |
| University Hospital Centre Sestre Milosrdnice University Department of Oncology & Nuclear Medicine Centre of Reference for thyroid disease1. | Croatia | Zagreb | Tomislav Jukić, Maji Franceschi, Marija Punda |
| General University Hospital in Prague | Czechia | Prague | Michal Krsek, |
| University Hospital Motol | Czechia | Prague | Vit Neuman, Barbora Obermannova |
| Aarhus University Hospital | Denmark | Aarhus | Eva Ebbehøj |
| Copenhagen University Hospital, Rigshospitalet | Denmark | Copenhagen | Anders Juul |
| Tartu University Hospital | Estonia | Tartu | Vallo Tillmann, Vallo Volke |
| CHU Angers | France | Angers | Patrice Rodien |
| Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals | France | Paris | Athanasia Stoupa, Lionel Groussin, Juliane Léger |
| Charité Universitätsmedizin Berlin | Germany | Berlin | Heiko Krude, Dominik Soll |
| Katholisches Klinikum Bochum | Germany | Bochum | Johannes Dietrich, Corinna Grasemann, Michaela Kleber |
| University Hospital Essen – Center for Rare Endocrine Diseases | Germany | Essen | Dagmar Fuehrer, Cordula Kiewert, Lars Moeller |
| Universitätsklinikum Schleswig-Holstein | Germany | Lubeck | Olaf Hiort |
| University Medical Center Mainz | Germany | Mainz | Dirk Prawitt, Joachim Pohlenz, Thomas Musholt |
| Ludwig-Maximilian-University Munich | Germany | Munchen | Christine Spitzweg |
| University Hospital Würzburg | Germany | Wuerzburg | Martin Fassnacht |
| Aghia Sophia Children’s Hospital | Greece | Athens | Christina Kanaka-Gantenbein, Maria Dolianiti, Nicolas Nicolaides |
| Evangelismos General Hospital | Greece | Athens | Theodora Stratigou, Georgia Ntali |
| Beaumont Hospital & Children’s Health Ireland | Ireland | Dublin | Ann McGowan |
| IRCCS Azienda Ospedaliero-Universitaria di Bologna | Italy | Bologna | Rita Ortolano, Valentina Vicennati, Valeria Di Natale, Andrea Repaci, Alessandra Gambineri, Federico Baronio, Alessandra Cassio |
| Azienda Ospedaliero Universitaria di Ferrara | Italy | Ferrara | Maria Chiara Zatelli, Maria Rosaria Ambrosio |
| Meyer Children’s Hospital Florence | Italy | Florence | Stefano Stagi |
| IRCCS Istituto Giannina Gaslini, Genova | Italy | Genova | Mohamad Maghnie, Giuseppe D'Annunzio |
| AOU policlinico “G.Martino” Messina | Italy | Messina | Salvatore Cannavò, Francesco Ferraù, Mariacarla Moleti, Malgorzata Gabriela Wasniewska, Malgorzata Gabriela Wasniewska |
| Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano | Italy | Milan | Maura Arosio, Alessia Dolci, Andrea Contarino |
| Istituto Auxologico Italiano – Istituto di Ricovero e Cura a Carattere Scientifico | Italy | Milan | Luca Persani, Laura Fugazzola, Carla Colombo, Irene Campi |
| Ospedale San Raffaele | Italy | Milan | Maria Cristina Vigone, Riccardo Maggiore, Anna Maria Formenti |
| AOU di Modena | Italy | Modena | Vincenzo Rochira, Sara De Vincentis |
| Azienda Ospedaliera Universitaria “Federico II”, Napoli | Italy | Naples | Francesco Fonderico, Paola Macchia, Mariacarolina Salerno, Donatella Capalbo, Raffaella Di Mase |
| Azienda Ospedaliera di Padova (AOP) | Italy | Padova | Laura Guazzarotti |
| Azienda Unità Sanitaria Locale-IRCCS of Reggio Emilia | Italy | Reggio Emilia | Chiara Grasselli |
| 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, Ruth Rossetto Giaccerino, Loredana Pagano |
| 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 | Raimonda Klimaite, Egle Vaitkute |
| Amsterdam UMC | Netherlands | Amsterdam | Eveline Bruinstroop, Christiaan Mooij |
| University Medical Center Groningen | Netherlands | Groningen | Thera Links |
| Leiden University Medical Center | Netherlands | Leiden | Noortje Corssmit, Marieke Snel |
| Maastricht University Medical Center – Center for Thyroid Carcinoma | Netherlands | Maastricht | Bas Havekes |
| Radboud University Nijmegen Medical Center – including Amalia’s children Hospital | Netherlands | Nijmegen | Romana Netea-Maier, Marco Medici, Hedi Claahsen |
| Erasmus MC: University Medical Center Rotterdam | Netherlands | Rotterdam | Robin Peeters, Edward Visser |
| University Medical Center Utrecht – Dept of Endocrine Oncology | Netherlands | Utrecht | Gerlof Valk, Hanneke van Santen, Menno Vriens |
| Maria Sklodowska-Curie National Research Institute of Oncology (MSCNRIO) | Poland | Gliwice | Jolanta Krajewska, Barbara Jarzab |
| Centro Hospitalar Universitario de São João, EPE | Portugal | Porto | Elisabete Rodrigues, Davide Carvalho |
| Spitalul Clinic de Psihiatrie “Prof. dr. Alexandru Obregia” | Romania | Bucharest | Dana Craiu, Diana Barca |
| Institute of Oncology “Prof dr. Ion Chiricuta” CLUJ NAPOCA | Romania | Cluj-Napoca | Doina Piciu, Elena Olariu |
| Spitalul Clinic Judetean de Urgenta Cluj (Cluj County Emergency Clinical Hospital) | Romania | Cluj-Napoca | Carmen Emanuela Georgescu, Cristina Alina Silaghi |
| University Hospital Martin, Dept of Paediatrics of Jessenius Medical Faculty Comenius University1. | Slovakia | Martin | Jarmila Vojtková |
| University Medical Centre Ljubljana | Slovenia | Ljubljana | Magdalena Avblej Stefanija, Katja Zaletel, Primoz Kotnik, Jasna Šuput Omladič |
| Hospital Universitari Vall d’Hebron | Spain | Barcelona | Ariadna Campos, Carles Zafon |
| Sahlgrenska University Hospital | Sweden | Gothenburg | Gudmundur Johannsson, Jovanna Dahlgren |
