| Klinikum Wels-Grieskirchen,Center for Pediatric Endocrinology / Dpt. of Pediatrics1. | Austria | Wels | Walter Bonfig |
| Cliniques universitaires Saint-Luc | Belgium | Brussel | Philippe Lysy |
| Hôpital Universitaire de Bruxelles (HUDERF-Erasme) | Belgium | Brussel | Claudine Heinrichs, Cécile Brachet |
| UZ Brussels | Belgium | Brussel | Inge Gies |
| UMHAT “Sveta Marina” (Varna) | Bulgaria | Varna | Nikolinka Yordanova, Savi Shishkov |
| University Hospital Motol | Czechia | Prague | Jan Lebl, Jana Krenek Malikova |
| Aarhus University Hospital | Denmark | Aarhus | Kirstine Stochholm |
| 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 |
| CHU Angers | France | Angers | Patrice Rodien |
| Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals | France | Paris | Irene Netchine |
| Assistance Publique – Consortium Pitie Salpêtrière – French Reference Centre for Prader-Willi Syndrome | France | Paris | Christine Poitou, Béatrice Dubern, Héléna Mosbah |
| CHU Toulouse | France | Toulouse | Maithe Tauber |
| University Hospital Aachen | Germany | Aachen | Thomas Eggermann, Miriam Elbracht |
| Charité Universitätsmedizin Berlin | Germany | Berlin | Peter Kühnen, Susanna Wiegand, Martin Siegenthaler |
| University Hospital Essen – Center for Rare Endocrine Diseases | Germany | Essen | Nicole Unger, Cordula Kiewert |
| Ludwig-Maximilian-University Munich | Germany | Munchen | Heinrich Schmidt, Jochen Schopohl, Martin Bidlingmaier |
| Universitätsklinikum Tübingen | Germany | Tübingen | Gerhard Binder, Roland Schweizer |
| Universitätsklinikum Ulm (Ulm University Medical Center) | Germany | Ulm | Martin Wabitsch, Julia von Schnurbein |
| Aghia Sophia Children’s Hospital | Greece | Athens | Christina Kanaka-Gantenbein, Evangelia Charmandari, Nicolas Nicolaides |
| Beaumont Hospital & Children’s Health Ireland | Ireland | Dublin | Susan O'Connell |
| IRCCS Azienda Ospedaliero-Universitaria di Bologna | Italy | Bologna | Emanuela Scarano, Silvia Garelli, Guido Zavatta, Alessandra Gambineri, Federico Baronio |
| 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, Malgorzata Gabriela Wasniewska, Tommaso Aversa |
| Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano | Italy | Milan | Claudia Giavoli, Eriselda Profka, Giulia Rodari |
| Istituto Auxologico Italiano – Istituto di Ricovero e Cura a Carattere Scientifico | Italy | Milan | Graziano Grugni, Silvia Russo, Simona Bertoli |
| Ospedale San Raffaele | Italy | Milan | Gianni Russo, Gabriella Pozzobon |
| AOU Università degli Studi della Campania “Luigi Vanvitelli”, Napoli | Italy | Naples | Anna Grandone, Giuseppina Rosaria, Maria Ida Maiorino |
| Azienda Ospedaliera Universitaria “Federico II”, Napoli | Italy | Naples | Silvia Savastano, Mariacarolina Salerno, Donatella Capalbo, Raffaella Di Mase |
| Azienda Ospedaliera di Padova (AOP) | Italy | Padova | Laura Guazzarotti, Roberto Vettor, Pietro Maffei |
| 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, Gerdi Tuli |
| AOUI di Verona | Italy | Verona | Franco Antoniazzi, Paolo Cavarzere |
| Childrens Clinical University Hospital1. | Latvia | Rīga | Iveta Dzivite-Krisane, Jurgita Gailite |
| Pauls Stradins Clinical University Hospital1. | Latvia | Riga | Lauma Jaunozola |
| Hospital of Lithuanian University of Health Sciences Kauno Klinikos | Lithuania | Kaunas | Ruta Kriksciuniene, Ruta Navardauskaite |
| Leiden University Medical Center | Netherlands | Leiden | Christiaan de Bruin |
| Erasmus MC: University Medical Center Rotterdam | Netherlands | Rotterdam | Anita Hokken, Laura de Graaff |
| Oslo University Hospital HF1. | Norway | Oslo | Jens Bollerslev |
| National Institute of Children’s Diseases, Dept. of Paediatrics of Medical Faculty Comenius University1. | Slovakia | Bratislava | Ludmila Kostalova, Eva Vitariusova |
| University Hospital Martin, Dept of Paediatrics of Jessenius Medical Faculty Comenius University1. | Slovakia | Martin | Jarmila Vojtková |
| University Medical Centre Ljubljana | Slovenia | Ljubljana | Primoz Kotnik, Jasna Šuput Omladič |
| Hospital Sant Joan de Déu Barcelona | Spain | Barcelona | |
| Sahlgrenska University Hospital | Sweden | Gothenburg | Gudmundur Johannsson, Jovanna Dahlgren |
| Karolinska University Hospital | Sweden | Stockholm | Charlotte Höybye, Lars Sävendahl |
