Checklist for Autism in Toddlers Third Edition(CHAT-3) for Chinese Children Hong Kong Study Principle Investigator: Prof virginia Wong Co-Investigators: Dr Cheuk-Wing Fung Dr Brian Hon-yin Chung Dr Wing-Cheong Lee Dr Joy lok-Sum Leung Ms Nancy I sang Ms stella huiChecklist for Autism in Toddlers Third Edition (CHAT-3) for Chinese Children – Hong Kong Study Principle Investigator: Prof Virginia Wong Co-Investigators: Dr Cheuk-Wing Fung Dr Brian Hon-Yin Chung Dr Wing-Cheong Lee Dr Joy Lok-Sum Leung Ms Nancy Tsang Ms Stella Hui