Formant-Estimated Vocal Tract Length & Extrinsic Laryngeal Muscle Activation During Modulation of Vocal Effort in Healthy Speakers, by Matti Groll, Victoria McKenna, Surbhi Hablani, & Cara Stepp https://t.co/GPlmENeArv @SteppLab @mgroll9 @BU_Tweets #SpeechScience @BUMedicine