1) Age 26 years or older
2) Participants from:
Europe, Australia
South, Central, North America
Russia, Ukraine, Belarus, Moldova, Georgia, Armenia
Algeria, Bahrain, Comoros, Djibouti, Egypt, Iraq, Jordan, Kuwait, Lebanon, Libya, Mauritania, Morocco, Oman, Palestine, Qatar, Saudi Arabia, Somalia, Sudan, Syria, Tunisia, the United Arab Emirates, and Yemen