Harlan WR, Osborne RK, Graybiel A (May 1964). "Prognostic value of the cold pressor test and the basal blood pressure: Based on an eighteen-year follow-up study". The American Journal of Cardiology. 13 (5): 683–687. doi:10.1016/0002-9149(64)90205-X. PMID14152011.
Harlan WR, Osborne RK, Graybiel A (May 1964). "Prognostic value of the cold pressor test and the basal blood pressure: Based on an eighteen-year follow-up study". The American Journal of Cardiology. 13 (5): 683–687. doi:10.1016/0002-9149(64)90205-X. PMID14152011.