1. Second Department of Propedeutic Surgery, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. 1st Department of Otorhinolaryngology, University of Athens, Hippokration Hospital of Athens, Athens, Greece
3. Health Center Acharnes, Athens, Greece
4. Department of Internal Medicine, Pamakaristos Hospital, Athens, Greece
5. Department of Internal Medicine, KAT General Hospital, Athens, Greece
6. Health Center Peristeriou, Athens, Greece
7. Breast Surgical Clinic, Saint Savvas Anti-Cancer Hospital, Athens, Greece
8. Dromokaiteio Psychiatric Hospital, Chaidari 124 61, Athens, Greece
9. Department of Endocrinology and Diabetes Center, "G. Gennimatas", General Hospital of Athens, Athens, Greece