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International Urology and Nephrology > 2008 > 40 > 3 > 741-748
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz > 2007 > 50 > 5-6 > 728-735
European Journal of Nutrition > 2006 > 45 > 3 > 136-143
Journal of Behavioral Medicine > 1998 > 21 > 2 > 115-129