Oct 24 (Reuters) - Following are brief profiles of the 15 teams in the National Basketball Association's (NBA) Eastern Conference ahead of the 2013-14 season. ATLANTIC DIVISION BOSTON CELTICS Founded: 1946 NBA titles: 17 (2008, 1986, 1984, 1981, 1976, 1974, 1969, 1968, 1966, 1965, 1964, 1963, 1962, 1961, 1960, 1959, 1957) Head coach: Brad Stevens 2012-13 record: 41-40 (Lost to New York in first ...