德国警方逮捕一名39岁的医生，据称他在柏林的一家护理服务机构工作期间犯下了杀人罪，并试图掩盖罪行。警方指控他谋杀了4名患者。
Police allege that a 39-year-old doctor working for a nursing service in Berlin committed manslaughter and tried to cover it up.
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