Corrigendum: Overcoming Bottlenecks of Enzymatic Biofuel Cell Cathodes: Crude Fungal Culture Supernatant Can Help to Extend Lifetime and Reduce Cost. Issue 12 (December 2013) - Sané, Sabine; Jolivalt, Claude; Mittler, Gerhard; Nielsen, Peter J.; Rubenwolf, Stefanie; Zengerle, Roland; Kerzenmacher, Sven