Having a background in human resources and having a stuttter for 45 years, disclose before it starts that way you take back the power and then you move on with the interview. By disclosing, you show your courage, determination and resiliency. They already have your CV with the KSAs (knowledge, skills and abilities) NOW show them your personality and energy. YOU OWN THAT ROOM and THAT'S YOUR JOB. You got this!!!!