M. Christensen

The clinical utility of the Ca19-9 radioimmunoassay for the diagnosis of pancreatic cancer presenting as pain or weight loss. A cost-effectiveness analysis.

A. Rustgi, M. Silverstein, J. Richter, 1989, Archives of internal medicine.

Effectiveness of current technology in diagnosis and management of lower gastrointestinal hemorrhage

N. Nishioka, L. Kaplan, J. Richter, 1995, Gastrointestinal endoscopy.

Angiodysplasia Natural History and Efficacy of Therapeutic Interventions

G. Colditz, N. Nishioka, J. Richter, 2005 .

Angiodysplasia : natural history and efficacy of therapeutic interventions

G. Colditz, N. Nishioka, J. Richter, 1989 .

Endoscopic palliation of obstructive esophagogastric malignancy.

D. Mathisen, R. Schapiro, P. Kelsey, 1988, Gastrointestinal endoscopy.

Cost-utility analysis of screening and laser treatment of retinopathy of prematurity.

G. Beauchamp, M. Christensen, J. Dunbar, 2009, Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus.

Angiodysplasia

G. Colditz, N. Nishioka, J. Richter, 1989, Digestive Diseases and Sciences.

Chronic cholecystitis. An analysis of diagnostic strategies.

J. Simeone, M. Silverstein, J. Richter, 1987, Investigative radiology.