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Kallio, K., T. Kutser, T. Hannonen, S. Koponen, J. Pulliainen, J. Vepsäläinen, T. Pyhälahti, (2001)2018-04-162018-04-16https://ioccg.org/wp-content/uploads/2016/05/logo-ioccg-website.pngIOCCGhttps://ioccg.org/wp-content/uploads/2016/05/logo-ioccg-website.png200px200px