Training of physicians and medical personnel in the use of cryotherapy and cryosurgery; training of physicians and medical personnel in the use of cryotherapy and cryosurgical equipment, namely, surgical and treatment probes, catheters and endoscopes; training of physicians and medical personnel in the use of cryosurgical and cryotherapy device control systems, namely, apparatuses for controlling the flow of cryogens, bleeder and pressure reduction valves for maintaining pressure in cryotherapy and cryosurgical devices and delivery systems, rigid and flexible medical endoscopes, catheters, lumen blocking balloons and shields for gastric blocking, nasogastric tubes, suction devices for cryogens removal and endoscopy cameras; training of physicians and medical personnel in the use of therapy and surgical delivery systems for delivering cryogens, namely, rigid and flexible medical endoscopes, catheters, lumen blocking balloons and shields for gastric blocking, nasogastric tubes, suction devices for cryogens removal and endoscopy cameras; training of physicians and medical personnel in performing medical procedures involving cryotherapy and cryosurgery; and training of physicians and medical personnel in performing medical procedures involving abdominal, bladder, pancreatic, kidney, lung, stomach, esophageal and upper and lower gastrointestinal tissue identification, separation, ablation or eradication