BAGHDAD (Reuters) - A Suicide bomber killed 19 people and wounded 28 others on Sunday outside a Shi'ite Muslim mosque in western Baghdad, where mourners were attending a funeral, a police ******r and medical official said. "The attacker approached the entrance of the mosque and blew himself up among the crowd," the police ******r said, declining to be named. The attack in the affluent neighborhood of Harthiya was the latest in a surge of bombings that have rocked Baghdad over the last month, most of them claimed by Islamic State. (Reporting by Ned Parker; Editing by Crispian Balmer)