Physician consultation in young children with recurrent pain - a population-based study
G. Hirschfeld, J. Wager, B. Zernikow, PeerJ 3 (2015) 1–12.

Influence of parental occupation on access to specialised treatment for paediatric chronic pain -a retrospective study
J. Wager, A. Ruhe, G. Hirschfeld, C. Wamsler, M. Dobe, T. Hechler, B. Zernikow, Der Schmerz 27 (2013) 305–311.