Probst, P., Grummich, K., Ulrich, A., Büchler, M. W., Knebel, P., & Diener, M. K. (2014). Association of industry sponsorship and positive outcome in randomised controlled trials in general and abdominal surgery: Protocol for a systematic review and empirical study. Syst Rev.

Probst, Pascal, Kathrin Grummich, Alexis Ulrich, Markus W. Büchler, Phillip Knebel, i Markus K. Diener. "Association of Industry Sponsorship and Positive Outcome in Randomised Controlled Trials in General and Abdominal Surgery: Protocol for a Systematic Review and Empirical Study." Syst Rev 2014.

Probst, Pascal, et al. "Association of Industry Sponsorship and Positive Outcome in Randomised Controlled Trials in General and Abdominal Surgery: Protocol for a Systematic Review and Empirical Study." Syst Rev 2014.