The Chinese University of Hong Kong will offer free autism screening for 200 young children with suspected symptoms under a pilot project using a newly developed tool that tests stool samples and can provide results as quickly as one week later. Researchers at the university said on Wednesday that they and a spin-off company, MicroSigX, would start screening children between the ages of 18 months and four years from January next year. Professor Ng Siew Chien, an associate dean at the...