| Austria | Graz | Medical University of Graz, Div of Endocrinology Diabetology |  |
| Austria | Innsbruck | Medical University Innsbruck |  |
| Austria | Linz | Centre for Growth and Osteology, Dept. of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz |  |
| Austria | Vienna | Medical University of Vienna, Center for Disorders of Sex Development, Dept. of Pediatrics |  |
| Austria | Vienna | Medical University of Vienna, Center for Rare Endocrinologic Diseases, Dept. of Internal Medicine III |  |
| Austria | Vienna | Vienna Bone and Growth Centre |  |
| Austria | Wels | Klinikum Wels-Grieskirchen, Center for Pediatric Endocrinology, Dept. of Pediatrics |  |
| Belgium | Antwerp | Antwerp University Hospital |  |
| Belgium | Brussels | Cliniques Universitaires de Bruxelles – Hopital Erasme |  |
| Belgium | Brussels | Cliniques Universitaires Saint-Luc |  |
| Belgium | Brussels | UZ Brussels |  |
| Belgium | Ghent | Ghent University Hospital |  |
| Belgium | Leuven | UZ Leuven |  |
| Belgium | Liege | Centre Hospitalier Universitaire de Liège |  |
| Bulgaria | Varna | MHAT “Sveta Marina” |  |
| Croatia | Zagreb | Dubrava University Hospital, Zagreb, Croatia |  |
| Croatia | Zagreb | University Hospital Centre Sestre Milosrdnice University, Dept. of Oncology & Nuclear Medicine Centre of Reference for thyroid disease |  |
| Cyprus | Nicosia | The Cyprus Foundation for Muscular Dystrophy Research, Dept. of Molecular Genetics, Function and Therapy |  |
| Czech Republic | Prague | University Hospital Motol |  |
| Czech Republic | Prague | Všeobecná fakultní nemocnice |  |
| Denmark | Copenhagen | Copenhagen University Hospital, Rigshospitalet |  |
| Denmark | Odense | Odense University Hospital |  |
| Egypt | Tanta | Tanta University faculty of medicine |  |
| Estonia | Tartu | Tartu University Hospital |  |
| Finland | Helsinki | Endocrinology, Helsinki University Hospital |  |
| France | Angers | CHU Angers |  |
| France | Lyon | Hospices Civils de Lyon |  |
| France | Marseille | Assistance Publique – Hopitaux de Marseille |  |
| France | Paris | Assistance Publique – Consortium Cochin, Robert Debré, Necker, St Antoine, La Pitié Salpétrière, Trousseau University Hospitals |  |
| France | Paris | Assistance Publique – Consortium Pitie Salpêtrière – French Reference Center for Prader-Willi Syndrome |  |
| France | Paris | Hôpital Bicêtre |  |
| France | Paris | Reference center for rare diseases of calcium and phosphate-HEGP |  |
| France | Paris | Skeletal disease-Lariboisiere |  |
| France | Toulouse | CHU Toulouse |  |
| Germany | Aachen | University Hospital Aachen |  |
| Germany | Berlin | Charité Universitätsmedizin Berlin |  |
| Germany | Bochum | St. Josef-Hospital and CeSER, Ruhr University Bochum |  |
| Germany | Dusseldorf | University Hospital Düsseldorf, AöR, Dept. of General Pediatrics, Neonatology and Pediatric Cardiology |  |
| Germany | Essen | University Hospital Essen – Center for Rare Endocrine Diseases |  |
| Germany | Hamburg | Institute for Osteology and Biomechanics (IOBM), University Medical Center Hamburg-Eppendorf (UKE) |  |
| Germany | Hannover | Hannoversche Kinderheilanstalt, Diabetes Center for Children and Adolescents |  |
| Germany | Luebeck | University Hospital Schleswig-Holstein |  |
| Germany | Magdeburg | Otto-von-Guericke-University, Med. Faculty, Central German Network for Rare disease |  |
| Germany | Mainz | University Medical Center Mainz |  |
| Germany | Munich | Ludwig-Maximilian-University Munich |  |
| Germany | Tuebingen | University Hospital Tuebingen |  |
| Germany | Ulm | Ulm University Hospital – Paediatric Endocrinology and Diabetes |  |
| Germany | Wuerzburg | University Hospital Würzburg |  |
| Greece | Athens | Aghia Sophia children’s hospital Athens |  |
| Greece | Athens | Centre of Expertise for Rare Endocrine Diseases-C.E.R.E.D-(General Hospital of Athens “LAIKO”) |  |
| Greece | Athens | Evangelismos Hospital- Department of Endocrinology, Diabetes and Metabolism, National Expertise Center for Rare Endocrine Disorders |  |
| Greece | Athens | Hellenic Airforce & VA |  |
| Greece | Athens | National and Kapodistrian University of Athens |  |
| Greece | Athens | NIMTS Veterans' hospital |  |
| Greece | Patras | Patras University Hospital, Dept. of Internal Medicine, Div. of Rheumatology |  |
| Hungary | Budapest | Semmelweis University |  |
| Ireland | Dublin | Beaumont Hospital |  |
| Ireland | Dublin | Children’s Health Ireland |  |
| Israel | Jerusalem | Hadassah-Hebrew University Medical Center |  |
| Italy | Bari | Azienda Opsedaliero Universitaria Policlinico Consorziale Bari |  |
| Italy | Bologna | Azienda Ospedaliera Sant’Orsola Malpighi |  |
| Italy | Bologna | IRCCS Istituto Ortopedico Rizzoli |  |
| Italy | Brescia | ASST Spedalia Civili di Brescia |  |
| Italy | Catania | Garibaldi Nesima Hospital |  |
| Italy | Ferrara | Azienda Ospedaliero Universitaria di Ferrara |  |
| Italy | Florence | Donatello Bone Clinic |  |
| Italy | Florence | Meyer Children’s Hospital Florence |  |
| Italy | Florence | University Hospital Florence, Careggi |  |
| Italy | Genova | IRCCS San Martino University Hospital – Genoa (IT5) |  |
| Italy | Genova | IRCCS Istituto Giannina Gaslini- Genova |  |
| Italy | Genova | Galliera Hospital |  |
| Italy | Messina | University Hospital Policlinico G. Martino |  |
| Italy | Milan | Istituto Auxologico Italiano – IRCCS, Scientific Institute for Research, Hospitalization and Healthcare |  |
| Italy | Milan | Ospedale San Raffaele |  |
| Italy | Milan | Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico (Policlinico di Milano) |  |
| Italy | Modena | University Hospital of Modena (A.O.U. di Modena) |  |
| Italy | Naples | Antonio Cardarelli Hospital |  |
| Italy | Naples | “Federico II” University Hospital, Naples |  |
| Italy | Naples | University of Campania L. Vanvitelli |  |
| Italy | Padova | University Hospital of Padua (AOP) |  |
| Italy | Pisa | Azienda Ospedaliero Universitaria Pisana - Obesity Centre, Endocrinology Unit |  |
| Italy | Pisa | Azienda Ospedaliero Universitaria Pisana - Unità Operativa di Endocrinologia 2 |  |
| Italy | Reggio Emilia | Local Health Authority – IRCCS of Reggio Emilia |  |
| Italy | Rome | Sapienza University of Rome |  |
| Italy | Turin | “Città della Salute e della Scienza” University Hospital of Turin |  |
| Italy | Verona
| Azienda Ospedaliera Universitaria Integrata (AOUI) di Verona |  |
| Latvia | Riga | Childrens Clinical University Hospital |  |
| Lithuania | Kaunas | Hospital of Lithuanian University of Health Sciences Kauno klinikos |  |
| Luxembourg | Luxembourg | Luxembourg Hospital Center |  |
| Malaysia | Putrajaya | Hospital Putrajaya |  |
| Netherlands | Amsterdam | Amsterdam University Medical Center, location AMC + VUMC |  |
| Netherlands | Groningen | University Medical Center Groningen |  |
| Netherlands | Leiden | Leiden University Medical Center |  |
| Netherlands | Maastricht | Maastricht University Medical Center – Center for Thyroid Carcinoma |  |
| Netherlands | Nijmegen | Radboud University Nijmegen Medical Center – including Amalia’s children Hospital |  |
| Netherlands | Rotterdam | Erasmus MC: University Medical Center Rotterdam |  |
| Netherlands | Utrecht | University Medical Center Utrecht - Dept. of Endocrine Oncology |  |
| Netherlands | Veldhoven | Máxima Medisch Centrum |  |
| Netherlands | Zwolle | ISALA |  |
| Norway | Oslo | Oslo University Hospital HF |  |
| Poland | Gliwice | Maria Sklodowska-Curie institute – Oncology Center Gliwice Branch |  |
| Poland | Katowice | Medical University of Silesia |  |
| Poland | Poznan | Karol Jonscher’s Clinical Hospital of Poznan University of Medical Sciences |  |
| Poland | Warsaw | Public Paediatric Teaching Hospital |  |
| Portugal | Coimbra | Coimbra University Hospital Centre |  |
| Portugal | Lisbon | APDP – Diabetes Portugal |  |
| Portugal | Lisbon | Lisbon North University Hospital Centre |  |
| Portugal | Porto | São João University Hospital Centre – ULS |  |
| Romania | Bucharest | C.I.Parhon National Institute of Endocrinology |  |
| Romania | Bucharest | “Prof. Dr. Alexandru Obregia” Clinical Psychiatric Hospital |  |
| Romania | Cluj-Napoca | Institute of Oncology “Prof.dr.Ion Chiricuta” Cluj-Napoca |  |
| Romania | Cluj-Napoca | Cluj-Napoca County Emergency Clinical Hospital |  |
| Serbia | Belgrade | Mother and Child Health Care Institute of Serbia “Dr. Vukan Cupic” |  |
| Slovakia | Bratislava | National Institute of Children’s Diseases, Dept. of Paediatrics of Medical Faculty Comenius University |  |
| Slovakia | Martin | University Hospital Martin, Dept of Paediatrics of Jessenius Medical Faculty Comenius University, National Center for Autoimmune Polyglandular Syndromes |  |
| Slovenia | Ljubljana | University Medical Centre Ljubljana |  |
| Spain | Barcelona | Hospital de la Santa Creu i Sant Pau – Health Management Foundation |  |
| Spain | Barcelona | Hospital del Mar Medical Research Institute |  |
| Spain | Barcelona | Hospital Sant Joan de Déu Barcelona |  |
| Spain | Barcelona | Vall d’Hebron University Hospital |  |
| Spain | Bilbao | Cruces University Hospital |  |
| Spain | Madrid | Hospital Universitario La Paz |  |
| Spain | Santander | Marqués de Valdecilla University Hospital |  |
| Spain | Sevilla | Virgen del Rocío Regional Hospital Complex |  |
| Spain | Toledo | Virgen de la Salud Hospital |  |
| Spain | Vitoria-Gasteiz | Araba University Hospital |  |
| Sweden | Gothenburg | Sahlgrenska University Hospital |  |
| Sweden | Stockholm | Karolinska University Hospital |  |
| Switzerland | Lausanne | Lausanne University Hospital |  |
| Turkey | Istanbul | Marmara University |  |
| UK | Cambridge | Cambridge University Hospitals |  |
| UK | Glasgow | NHS Greater Glasgow & Clyde Health Board |  |
| UK | London | Great Ormond Street Hospital/UCLH – NHS Foundation Trust |  |
| UK | Oxford | Oxford University Hospitals NHS Foundation Trust |  |
| UK | Southampton | University Hospitals Southampton – NHS Foundation Trust |  |
| UK | Sutton | Royal Marsden Hospital |  |
| Ukraine | Kyiv | Chebotarev institute of gerontology of the NAMS of Ukraine |  |
| Ukraine | Kyiv | Ukrainian Research Center of Endocrine Surgery, Endocrine Organs and Tissue Transplantation, MoH of Ukraine |  |