Bypass surgery treats symptoms of coronary heart disease. That happens when a waxy substance called plaque builds up inside the arteries in your heart and blocks blood and oxygen from reaching it. You may feel things like:
85% of the approximate 8.7m population of Bulgaria speak the official language, Bulgarian. 2.5% speak Macedonian, considered in Bulgaria as a dialect of Bulgarian and not as a separate language. Other minority languages include Romani, Turkish, spoken by 9% of the population, and the related languages of Gagauz, Tatar, and Albanian.
Bulgarians are very proud of the language, since its creation has played a major role in the development of Bulgarian culture and traditions. If, however, you're freaked out about all those new symbols, have no fear: You can easily get around in Sofia because many signboards are actually written in English.