LOS ANGELES, Mar 18: British singer Morrissey has canceled the remainder of his US tour for medical reasons, after suffering a number of ailments in recent months including a bleeding ulcer and double pneumonia, his spokeswoman said. The former front man for the alternative rock band The Smiths has pulled out of the last 22 concerts on his itinerary, starting with one scheduled for today in Lawrence, Kansas, his publicist, Lauren Papapietro, said late on Friday. (agencies)