The issue focused on medical records that doctors must release for fear of discipline or lawsuits. In March, researchers found hundreds of thousands of documents released by California doctors had no scientific basis and included false claims about birth control pills. A study published last month said scientists could see medical research studies showing biological effects from chemical exposures at levels thought to be safe in laboratory experiments. Scientists say there's little science behind these claims. But studies show chemical exposure has long been linked to neurodevelopmental disorders such as autism and ADHD. Research