CMKP- Centrum Medyczne Kształcenia Podyplomowego, Warszawa, Poland
Università Cattolica S. Cuore, Rome, Italy
Diabetes-Praxis Muenster, Munster, Germany
Klinika gerontologická a metabolická,, Hradec Kralove, Czech Republic
Asklepios Klinik St. Georg, Hamburg, Germany
Sanatatea Ta Medical Center, Bucharest, Romania
Diabetes and Glandular Disease Clinic (DGD), San Antonio, Texas, United States
Cedars Sinai, Los Angeles, California, United States
University of Colorado at Denver Health Sciences Center, Denver, Colorado, United States
Cedars Sinai, Los Angeles, California, United States
Scripps Clinic Del Mar, La Jolla / San Diego, California, United States