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Vrinten, Charlotte, Alexander F. Lipka, Erik W. van Zwet, Kirsten J M. Schimmel, Martina C. Cornel, Marja R. Kuijpers, Yechiel A. Hekster, Stephanie S. Weinreich, a Jan J G M. Verschuuren. "Ephedrine As Add-on Therapy for Patients With Myasthenia Gravis: Protocol for a Series of Randomised, Placebo-controlled N-of-1 Trials." BMJ Open 2015.

Vrinten, Charlotte, et al. "Ephedrine As Add-on Therapy for Patients With Myasthenia Gravis: Protocol for a Series of Randomised, Placebo-controlled N-of-1 Trials." BMJ Open 2015.