193,273 NELSON SIDNEY W., FREIMANIS ATIS K. , WIOT JEROME Gastrointestinal tract disease syllabus. Pediatric consultant,Theodore E. Keats. Questions prepared in cooperation with The national Board of Medical Examiners. Chicago 1973 American College of Radiology 4° s. XII, 284, ilustr. Professional Self-evaluation and Continuing Education Program, set 4.