Reply to Ziesenitz, Victoria; Erb Thomas; Trachsel, Daniel; van den Anker Johannes, regarding their comment "Safety of dipryone (metamizole) in children—what's the risk of agranulocytosis?". Issue 3 (12th February 2018) - de Leeuw, Thomas G.; Dirckx, Maaike; de Wildt, Saskia N.