FIDELITY ADVISOR MUNICIPAL INCOME 2015 MUTUAL FUNDS USMF - What does FIDELITY ADVISOR MUNICIPAL INCOME 2015 MUTUAL FUNDS USMF mean? - What does FIDELITY ADVISOR MUNICIPAL INCOME 2015 MUTUAL FUNDS USMF stand for? - FIDELITY ADVISOR MUNICIPAL INCOME 2015 MUTUAL FUNDS USMF meaning