Comparing position and orientation accuracy of different electromagnetic sensors for tracking during interventions. - Jasper Nijkamp; Bram Schermers; Sander Schmitz; Sofieke de Jonge; Koert Kuhlmann; Ferdinand van der Heijden; Jan-Jakob Sonke; Theo Ruers (Int. J. Comput. Assist. Radiol. Surg., 2016)