Transpapillary cholangioscopy-directed lithotripsy in patients with difficult bile duct stones.

Short-wire ERCP systems.

Chromoendoscopy.

Echoendoscopes.

Endoscopic free electron laser technique development for minimally invasive optic nerve sheath fenestration.

Sclerosing agents for use in GI endoscopy.

Optic nerve sheath fenestration with endoscopic accessory instruments versus the free electron laser (FEL).

Safety and efficacy of argon plasma coagulation trimming of malpositioned and migrated biliary metal stents: a controlled study in the porcine model.

A prospective study of complications of endoscopic retrograde cholangiopancreatography and endoscopic ultrasound in an ambulatory endoscopy center.

Single-step EUS-guided transmural drainage of simple and complicated pancreatic pseudocysts.