A hospital in France has had to stop an experimental treatment using hydroxychloroquine on at least one coronavirus patient after it became a "major risk" to their cardiac health. The University Hospital Center of Nice (CHU de Nice) is one of many hospitals trialing hydroxychloroquine in COVID-19 patients. It announced it had been selected for the trial on March 22. A statement from the hospital said it was testing four experimental treatments, one of which included hydroxychloroquine. It hoped to establish its effectiveness and side effects of this and the other treatments being tested. In an interview with the French...