6704
During World War II and in the period immediately following the war , there were further significant demographic changes as the German-speaking population , the Volksdeutsche , were either forced or otherwise compelled to leave - reducing their number from the prewar German population of Yugoslavia of 500,000 , living in parts of present-day Croatia and Serbia , to the figure of 62,000 recorded in the 1953 census .
 Yugoslavia, Croatia, Serbia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yugoslavia, Croatia, Serbia