Complex sentence: Surveys of genetic counselors indicate that an overwhelming majority (96--98.5 percent) would not divulge misattributed paternity results to the presumed father; sixty percent would include information about misattributed paternity on an informed-consent document.
Split into simpler sentences: Surveys of genetic counselors indicate that an overwhelming majority, 96-98.5%, would not divulge misattributed paternity results to the presumed father. In addition, only 60% would include information about misattributed paternity on an informed consent document.