title: Placebo: Unsolved Problems for Science, and Simple Conclusions for Clinical Practice.
authors.affiliation: From Research Group Psychosomatic Rehabilitation, Charité University Medicine Berlin, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Linden
keywords: Nocebo; Optimism; Positive Psychology; Randomized Controlled Trial; Treatment Expectancy; Uncertainty Intolerance