Countries in the space of affiliations. Key. AR Argentina, AM Armenia, AU Australia, AT Austria, AZ Azerbaijan, BY Belarus, BE Belgium, BR Brazil, BG Bulgaria, CA Canada, CL Chile, CN China, CO Colombia, HR Croatia, CZ Czech Republic, DK Denmark, EG Egypt, EE Estonia, FI Finland, FR France, DE Germany, GR Greece, HU Hungary, IN India, IR Iran, IE Ireland, IL Israel, IT Italy, JP Japan, KZ Kazakhstan, KG Kyrgyzstan, LV Latvia, LT Lithuania, MY Malaysia, MX Mexico, MD Moldova, NL Netherlands, NZ New Zealand, NO Norway, PK Pakistan, PL Poland, PT Portugal, RO Romania, RU Russia, RS Serbia, SK Slovakia, SI Slovenia, ZA South Africa, KP South Korea, ES Spain, SE Sweden, CH Switzerland, TR Turkey, GB United Kingdom, UA Ukraine, US USA