TRAINING OF PHYSICIANS AND MEDICAL PERSONNEL IN THE USE OF CRYOTHERAPY AND CRYOSURGERY DEVICES, CRYOTHERAPY AND CRYOSURGERY DELIVERY SYSTEMS, COMPONENTS THEREOF AND RELATED EQUIPMENT; AND IN PERFORMING MEDICAL PROCEDURES INVOLVING CRYOTHERAPY, ESOPHOGEAL AND GASTROINTESTINAL TISSUE ABLATION AND TREATMENT OF BARRETT'S ESOPHAGUS

CRYOTHERAPY AND CRYOSURGERY DEVICES, FIXED AND MOBILE CRYOTHERAPY AND CRYOSURGERY DELIVERY SYSTEMS AND COMPONENTS THEREOF, CRYOGEN SOURCES, CONTROL APPARATUS, BLEEDER AND PRESSURE REDUCTION VALVES, ENDOSCOPES, CATHETERS, LUMEN BLOCKING BALLOONS AND SHIELDS, NASOGASTRIC TUBES, SUCTION DEVICES, CAMERAS, VIDEO DISPLAYS, COMPUTERS, COMPUTER INPUT DEVICES AND PRINTERS