An Al Jazeera investigation has found evidence that Bahrain's security forces are torturing medical workers to force criminal confessions. <br /><br />Since anti-government protests erupted in February, doctors and nurses have been targeted, with hundreds facing arrest.<br /><br />Forty-seven health workers have been charged since protests began - 24 doctors and 23 nurses - and 150 more are under investigation by the government.<br /><br />Charles Stratford has the second in our series of exclusive reports from Bahrain.