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Balthasar, Andrea J. R., Geert-Jan van Geffen, Marjolein van der Voort, Gerald W. Lucassen, Stefan Roggeveen, Ivar J. Bruaset, a Joergen Bruhn. "Spectral Tissue Sensing to Identify Intra- and Extravascular Needle Placement — A Randomized Single-blind Controlled Trial." PLoS One 2017.

Balthasar, Andrea J. R., et al. "Spectral Tissue Sensing to Identify Intra- and Extravascular Needle Placement — A Randomized Single-blind Controlled Trial." PLoS One 2017.