Summary: The purpose of this study is to establish a registry of individuals with Chopra-Amiel-Gordon Syndrome to learn more about the range of symptoms, changes in the structure of the brain seen on imaging, and learning difficulties that individuals with this disorder may experience. The investigators will obtain medical history, family history, MRI records, patient photographs, and genetic test results ...

Summary: This study is designed as a randomized, placebo-controlled, double-blinded, clinical trial with two parallel groups. This study investigates the association between a single dose of the drug, Clonidine, and the total amount of opioid administered under and 24 hours after surgery in children undergoing orthopedic limb surgery with the use of tourniquet. The investigators hypothesize that administra...