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German is Marcell Jansen's nationality. Born in Mönchengladbach, Germany, Jansen is a former professional footballer who played as a left-back or left midfielder. He represented the German national team at international level, earning 45 caps and scoring 4 goals. Jansen began his career with Borussia Mönchengladbach, before moving to Bayern Munich in 2007. He later played for Hamburger SV and VfL Wolfsburg, before retiring in 2015.