LOS ANGELES - A baby believed to be the third smallest birth-weight infant ever to survive left hospital in Los Angeles on Friday, doctors and the proud parents said. Melinda Star Guido was born last August, 16 weeks early, weighing only 9.5 ounces (270 grammes)— less than a can of soda or the same as two iPhones — and has spent nearly five months in a neonatal intensive care unit.