PARIS — A former anaesthetist has gone on trial in the city of Besançon, in eastern France, accused of intentionally poisoning 30 people, including 12 patients who died.Frédéric Péchier, 53, consideredPARIS — A former anaesthetist has gone on trial in the city of Besançon, in eastern France, accused of intentionally poisoning 30 people, including 12 patients who died.Frédéric Péchier, 53, considered