https://eody.gov.gr/disease/sexoyalikos-metadidomena-nosimata
https://www.cdc.gov/std/default.htm
https://www.who.int/news-room/fact-sheets/detail/sexually-transmitted-infections-(stis)
https://eody.gov.gr/wp-content/uploads/2019/05/epiidimiologika-dedomena-1-1.pdf