TY - JOUR AU - Logemann, J A; Fisher, H B; Boshes, B; Blonsky, E R TI - Frequency and cooccurrence of vocal tract dysfunctions in the speech of a large sample of Parkinson patients JO - J Speech Hear Disord IS - 01 VL - 43 PY - 1978 DO - 10.1044/jshd.4301.47 L3 - PubMed-ID: 633872 SP - 47 EP - 57 ER -