Public Art & Health. Nature and abstract images after cardiac surgery. Research record PAH-002. Edition 4.11, 29 September 2026. https://www.publicart.health/research/pah-002 Underlying source citation (as listed in the repository): Ulrich RS, Lundén O, Eltinge JL. Effects of exposure to nature and abstract pictures on patients recovering from heart surgery. Paper, 33rd meeting of the Society for Psychophysiological Research, Rottach-Egern. Abstract in Psychophysiology. 1993;30(Suppl 1):7. https://www.healthdesign.org/knowledge-repository/effects-exposure-nature-and-abstract-pictures-patients-recovering-heart-surgery