The Influence of an Attachment-Related Stimulus on Oxytocin Reactivity in Poly-Drug Users Undergoing Maintenance Therapy Compared to Healthy Controls. - Fuchshuber J; Tatzer J; Hiebler-Ragger M; Trinkl F; Kimmerle A; Rinner A; Buchheim A; Schrom S; Rinner B; Leber K; Pieber T; Weiss E; et al. (Frontiers in psychiatry, 2020)