Algeria                             —
Argentina                         —
Armenia                           4
Australia                           5
Austria                             4
Bangladesh                       —
Belgium                            4
Brazil                               4
Bulgaria                            4
Cameroon                        4
Canada                            4
Chile                                4
China                               5
Croatia                             4
Cuba                                4
Czechoslovakia                5
Denmark                          4
Egypt                               4
Estonia                             4
Finland                             4
France                             5
Germany                          6
Ghana                              —
Greece                             4
Hong Kong                      —
Hungary                           4
Iceland                             4
India (INSA)                    5
Indonesia                         4
International (Mycoplasma)       4
Iran                                  4
Israel                                5
Italy                                 5
Japan                               6
Korea                             5
Kuwait                             4
Latvia                               4
Macedonia                       4
Mexico                            4
Morocco                          —
Netherlands                      5
New Zealand                   4
Nigeria                             4
Norway                           4
Peru                                 —
Philippines                        4
Poland                             5
Portugal                           4
Romania                           4
Russia                              4
Saudi Arabia                    4
Singapore                         4
Slovenia                           4
South Africa                     5
Spain                               5
Sweden                            4
Switzerland                      5
Taiwan (ROC)                 5
Thailand                           —
Turkey                             4
United Kingdom               6
United States of America  6
Uruguay                           4
Uzbekistan                       4
Venezuela                        —
Vietnam                           4
Zambia                             —
Zimbabwe                        —