Deadly collision caused by medical emergency in Ontario, police sayKITCHENER, Ont. — Provincial police say a 73-year-old man died and a woman was critically injured in a two-vehicle crash in Kitchener, Ont., on Saturday morning.They say it occurred at the intersection of West Hill Road and Highland Road East at about 9 a.m.Investigators say the 73-year-old man, from Cambridge, Ont., was driving a pickup truck westbound on Highland Road East when it collided with a sedan travelling eastbound on West Hill Road.Both vehicles came to rest in a ditch at the southeast corner of the intersection.The man was pronounced dead at the