Louagie, Y., Jamart, J., Buche, M., Eucher, P., & Schoevaerdts, J.-C. (2000). Flow measurement in coronary artery surgery - Reply. The Annals of Thoracic Surgery, 69(4), 1301. https://doi.org/10.1016/S0003-4975(99)01548-9 (Original work published 2000)