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American Heart Journal|October 1, 1978
Echocardiographic evaluation of porcine heterograft valves in the mitral and aortic positionsW E Harston, R M Robertson, G C FriesingerLancet (London, England)|October 18, 1980
Platelet aggregates in peripheral and coronary-sinus blood in patients with spontaneous coronary-artery spasmR M Robertson, D Robertson, G C Friesinger, et al.The American Journal of Cardiology|June 1, 1979
Variant angina pectoris: investigation of indexes of sympathetic nervous system functionD Robertson, R M Robertson, A S Nies, et al.Transactions of the American Clinical and Climatological Association|January 1, 1981
Prognosis in chronic ischemic heart diseaseG C FriesingerCirculation|June 1, 1982
The reasonable workup before recommending medical or surgical therapy: an overall strategyG C FriesingerCirculation|December 1, 1982
Thallium-201 uptake in variant angina: probable demonstration of myocardial reactive hyperemia in manM W Kronenberg, R M Robertson, M L Born, et al.Cardiology Clinics|March 27, 1999
Promises and perils of managed care for older patients with cardiac diseaseG C Friesinger, J FrancisThe New England Journal of Medicine|April 23, 1981
Thromboxane A2 in vasotonic angina pectoris: evidence from direct measurements and inhibitor trialsR M Robertson, D Robertson, L J Roberts, et al.Cardiovascular Clinics|January 11, 1975
Coronary arteriography: indications and pitfallsG C Friesinger, J M PerryAmerican Heart Journal|August 1, 1982
Randomized double-blind study of pindolol in patients with stable angina pectorisW E Harston, G C FriesingerPageof 16