Trick or Treat! Shriners Hospitals for Children-Northern California surgeons performed pumpkin surgery in the school this morning. Dr. David Greenhalgh, Chief of Burns, Dr. Sundeep Tumber, Anesthesiologist and Dr. John R. Davids, Assistant Chief of Orthopaedics entertained patients and families at the annual event. Our annual pumpkin surgery is a popular event for kids at…