Ali Abdurahman A., Saudi Arabia

Ali Abdurahman A., Saudi Arabia, April, 2017, Asklepios Childrens Hospital in Sankt Augustin, Prof. Dr. med. Boulos Asfour.

Jaroslav V., Sweden

Jaroslav V., Sweden, September 2018, University Hospital Saarland Homburg, Dr. Winkler.

Tariq K., United Kingdom

Tariq K., United Kingdom, August 2018, University Hospital Saarland Homburg, Dr. med. Michel Al Ghazal.

Omar A., Jordan

Omar A., Jordan, March, 2017, Academic Hospital Augustinerinnen.

Oksana K., Belarus

Oksana K., Belarus, March, 2017, Park-Clinic Weissensee, PD, Dr. med. Oliver Hauschild.

Boris T., USA

Boris T., USA, Marth, 2017, Academic Hospital Schwabing, Prof. Dr. med. Robert Ritzel.

Hazem Mahmoud Samy M., Egypt

Hazem Mahmoud Samy M., Egypt, August, 2017, Preventicum.

Mykhailo N., Ukraine

Mykhailo N., Ukraine, October 2018, Clinic for Molecular Orthopedics Duesseldorf, Priv.-Doz. Dr. Baltzer.

Irina K., Belarus

Irina K., Belarus, August, 2017, University Hospital Bonn, Prof. Dr. Finger.

Nemattilo T., Kyrgyzstan

Nemattilo T., Kyrgyzstan, July, 2017, Charite University Hospital Berlin, Prof. Dr. Walter Zidek.

Hrygorii V., Ukraine

Hrygorii V., Ukraine, September 2018, St. Vincentius Hospital Karlsruhe-Academic Hospital of the University of Freiburg, Prof. Dr. Christian Meyer.

William E., USA

William E., USA, November 2018, University Hospital Saarland Homburg, Dr. med. Michel Al Ghazal.

Younis Talib Jalal S., Iraq

Younis Talib Jalal S., Iraq, August, 2017, Urological Private Practice, Prof. Dr. med. H. Schuldes.

Ekaterina K., Georgia

Ekaterina K., Georgia, February 2020, Academic Hospital Garmisch-Partenkirchen, Prof. Dr. med. Hans-Dieter Allescher

Artavazd and Susambar, Armenia

Artavazd and Susambar, Armenia, November 2017, University Hospital Düsseldorf.