John A. Callahan

Carcinoid heart disease. Clinical and echocardiographic spectrum in 74 patients.

Patricia A. Pellikka, A. Jamil Tajik, Bijoy K. Khandheria et al. · Circulation · 1993 · 602 citations · Full text

Two-dimensional echocardiographically guided pericardiocentesis: Experience in 117 consecutive patients

John A. Callahan, James B. Seward, Rick A. Nishimura et al. · The American Journal of Cardiology · 1985 · 198 citations

Consecutive Patients, Cardiovascular Disease, Public Health +5

Primary cardiac tumors: Experience with 30 consecutive patients since the introduction of two-dimensional echocardiography

F. Earl Fyke, James B. Seward, William D. Edwards et al. · Journal of the American College of Cardiology · 1985 · 155 citations

Consecutive Patients, Health Sciences, Structural Heart Disease +10

Sensitivity of two-dimensional echocardiography in the direct visualization of atrial septal defect utilizing the subcostal approach: Experience with 154 patients

Clarence Shub, Ioanis Dimopoulos, James B. Seward et al. · Journal of the American College of Cardiology · 1983 · 126 citations

Medical Ultrasound, Health Sciences, Medical Imaging +10

Percutaneous pericardial catheter drainage: Report of 42 consecutive cases

Stephen L. Kopecky, John A. Callahan, A. Jamil Tajik et al. · The American Journal of Cardiology · 1986 · 111 citations

Percutaneous Coronary Intervention, Consecutive Cases, Medicine +3