Wissenschaftlicher ArtikelDifferential Diagnosis of Hyperferritinemia in Critically Ill PatientsSchuster, Friederike S.; Nyvlt, Peter; Heeren, Patrick; Spies, Claudia; Adam, Moritz F.; Schenk, Thomas; Brunkhorst, Frank M.; Janka, Gritta; La Rosée, Paul; Lachmann, Cornelia; Lachmann, Gunnar