Cognomen Sidak (Sidak 
, Сидак 
) , worldwide, is quite a rare last name. The surname Sidak is characteristic of Czechia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Belarus. Not in comparison with a country's population, it is commonest in Russia, India, and Indonesia. Also, Sidak is the forename as well as the last name.
| stefan sidak |
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