Andresen, Trine, Marieke Niesters, Albert Dahan, Bart Morlion, Tony O´Brien, and Asbjørn M. Drewes. 2021. “Pharmacological Management of Chronic Pain: How to Deal With the Catch-22 Situation”. Journal of Current Medical Research and Opinion 4 (02):773−791. https://doi.org/10.15520/jcmro.v4i02.382.