\input zb-basic \input zb-ioport \iteman{io-port 70758607} \itemau{Reinartz, Rianne; Platel, Bram; Boselie, Toon; Van Mameren, Henk; Van Santbrink, Henk; Romeny, Bart M. Ter Haar} \itemti{Cervical vertebrae tracking in video-fluoroscopy using the normalized gradient field} \itemso{MICCAI (1), 524-531 (2009).} \itemcc{} \itemut{} \itemli{doi:10.1007/978-3-642-04268-3\_65} \end