title: Comment on "assessing validity and application scope of the intrinsic estimator approach to the age-period-cohort (APC) problem".
authors.affiliation: Institute of Social and Preventative Medicine, Division of Biostatistics, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland, leonhard.held@ifspm.uzh.ch.
authors.forename: Leonhard
authors.initials: L
authors.lastname: Held
authors.forename: Andrea
authors.initials: A
authors.lastname: Riebler
mesh_terms: D015331:Cohort Studies; D006801:Humans; D015233:Models, Statistical; D012107:Research Design