Publisher Erratum: Combining hybrid and opaque scintillator techniques in the search for double beta plus decays - Manuel Böhles; Sebastian Böser; Magdalena Eisenhuth; Cloé Girard-Carillo; Kitzia M. Hernandez Curiel; Bastian Keßler; Kyra Mossel; Veronika Palušová; Stefan Schoppmann; Alfons Weber; Michael Wurm (European Physical Journal C: Particles and Fields)