World Health Organisation is removing hydroxychloroquine from its global study of potential coronavirus treatments while it carries out a review of its safety.Last week, Donald Trump said he was taking the anti-malarial drug, which he has promoted as providing possible protection from the coronavirus, despite warnings from health officials that it could cause heart problems.The decision by the WHO to temporarily suspend hydroxychloroquine from its study last week which suggested it might actually increase risk for COVID-19 patients.