Bailey, D. G.; Spence, J. D.; Munoz, C.; Arnold, J. M. (1991-02-02). "Interaction of citrus juices with felodipine and nifedipine". Lancet. 337 (8736): 268–269. doi:10.1016/0140-6736(91)90872-m. PMID1671113. S2CID37137655.
Spence, J. D.; Barnett, P. A.; Bulman, D. E.; Hegele, R. A. (1999). "An approach to ascertain probands with a non-traditional risk factor for carotid atherosclerosis". Atherosclerosis. 144 (2): 429–340. doi:10.1016/S0021-9150(99)00003-9. PMID10407504.
Spence, J. David (November 2006). "Technology Insight: ultrasound measurement of carotid plaque--patient management, genetic research, and therapy evaluation". Nature Clinical Practice. Neurology. 2 (11): 611–619. doi:10.1038/ncpneuro0324. PMID17057748. S2CID26077254.
Bailey, D. G.; Spence, J. D.; Munoz, C.; Arnold, J. M. (1991-02-02). "Interaction of citrus juices with felodipine and nifedipine". Lancet. 337 (8736): 268–269. doi:10.1016/0140-6736(91)90872-m. PMID1671113. S2CID37137655.
Spence, J. D.; Barnett, P. A.; Bulman, D. E.; Hegele, R. A. (1999). "An approach to ascertain probands with a non-traditional risk factor for carotid atherosclerosis". Atherosclerosis. 144 (2): 429–340. doi:10.1016/S0021-9150(99)00003-9. PMID10407504.
Spence, J. David (November 2006). "Technology Insight: ultrasound measurement of carotid plaque--patient management, genetic research, and therapy evaluation". Nature Clinical Practice. Neurology. 2 (11): 611–619. doi:10.1038/ncpneuro0324. PMID17057748. S2CID26077254.
Bailey, D. G.; Spence, J. D.; Munoz, C.; Arnold, J. M. (1991-02-02). "Interaction of citrus juices with felodipine and nifedipine". Lancet. 337 (8736): 268–269. doi:10.1016/0140-6736(91)90872-m. PMID1671113. S2CID37137655.