Hennig, M., Hundt, F., Busta, S., Mikus, S., Sanden, P., Sörgel, A., & Ruppert, T. (2017). Current practice and perspectives in CRO oversight based on a survey performed among members of the German Association of Research-Based Pharmaceutical Companies (vfa). Ger Med Sci.

Hennig, Michael, Ferdinand Hundt, Susanne Busta, Stefan Mikus, Per-Holger Sanden, Andrea Sörgel, và Thorsten Ruppert. "Current Practice and Perspectives in CRO Oversight Based On a Survey Performed Among Members of the German Association of Research-Based Pharmaceutical Companies (vfa)." Ger Med Sci 2017.

Hennig, Michael, et al. "Current Practice and Perspectives in CRO Oversight Based On a Survey Performed Among Members of the German Association of Research-Based Pharmaceutical Companies (vfa)." Ger Med Sci 2017.