Sweden
The Swedish equivalent to an internship is the allmäntjänstgöring ("general practice"), which is a requirement for obtaining a medical license. Its duration is at least 18 months, but usually lasts a bit longer, around 2 years in most cases. After the allmäntjänstgöring, the student can complete a test to receive their medical license. Then follows specialisation practice ("specialisttjänstgöring"), the equivalent of residency.
Read more about this topic: Internship (medicine)