CAMBRIDGE, Mass. -- Soviet President Mikhail Gorbachev 'laughed' five years ago when it was suggested he would someday win the Nobel Peace Prize, the co-president of the group that won the medal in 1985 said Monday. Dr. Bernard Lown, co-president of the International Physicians for the Prevention of Nuclear War, recalled the meeting he and his Soviet counterpart, Dr. Evgueni Chazov, had with Gorbachev in the Kremlin soon after they had accepted the award on behalf of the doctors' group. 'On