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Biessels, Geert Jan, Jolien Janssen, Esther van den Berg, Bernard Zinman, Mark A. Espeland, Michaela Mattheus, und Odd Erik Johansen. "Rationale and Design of the CAROLINA® - Cognition Substudy: A Randomised Controlled Trial On Cognitive Outcomes of Linagliptin Versus Glimepiride in Patients With Type 2 Diabetes Mellitus." BMC Neurol 2018.

Biessels, Geert Jan, et al. "Rationale and Design of the CAROLINA® - Cognition Substudy: A Randomised Controlled Trial On Cognitive Outcomes of Linagliptin Versus Glimepiride in Patients With Type 2 Diabetes Mellitus." BMC Neurol 2018.