Addendum to: Quasiparticle random phase approximation uncertainties and their correlations in the analysis of Ovββ decay. - Faessler, Amand; Fogli, G. L.; Lisi, E.; Rodin, V.; Rotunno, A. M.; Simkovic, F. (Physical Review D: Particles, Fields, Gravitation & Cosmology, 2013)