Rief 2017
                                  
    
    
  
    
  
      
  
  
    Rief, W., Shedden-Mora, M. C., Laferton, J. A. C., Auer, C., Petrie, K. J., Salzmann, S., et al. 
 (2017).  
Preoperative optimization of patient expectations improves long-term outcome in heart surgery patients: results of the randomized controlled PSY-HEART trial.  
BMC Medicine.