Youlim Choi developed the web-based care management system (CMTS) for the original multi-site IMPACT study and since then has developed several subsequent versions of the registry tool to facilitate various research projects and large-scale IMPACT implementations. Mr. Choi maintains the AIMS Center websites and CMTS. He has over 10 years of experience in information technology including network, security, and programming. He received his Master of Arts degree in Mathematics from UCLA.