1. Brodnitz F. Hormones and the human voice. Bull N Y Acad Med. 1971;47:183–91.
2. Sataloff RT. Professional voice: the science and art of clinical care. 4th ed. San Diego: Plural Publishing; 2017. p. 1–2099.
3. von Leden H. Presentation at: Seventh symposium on care of the professional voice. New York: The Juilliard School; June 16, 1978.
4. Punt NA. Applied laryngology—singers and actors. Proc R Soc Med. 1968;61:1152–6.
5. Anderson TD, Sataloff RT. Rhinosinusitis. In: Sataloff RT, editor. Professional voice: the science and art of clinical care. 4th ed. San Diego: Plural Publishing; 2017. p. 747–50.