NEW YORK : A New York fertility specialist, who said he successfully carried out a “three-parent” in vitro fertilization (IVF) technique resulting in a baby boy, called the procedure a “revolutionary approach in human  reproduction.”   John Zhang, medical director of New Hope Fertility Center in New York, spearheaded the technique roughly five months ago with a Jordanian couple at a clinic in Mexico.   The procedure, which the U.S. […]