Authors’ Reply:

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4. Murphy TP. Vestibular autorotation and electronystagmography testing in patients with dizziness. Am J Otol 1994;15:502–5.

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6. Henry DF DiBartolomeo JD Closed-loop caloric, harmonic acceleration and active head rotations tests: norms and reliability. Otolaryngol Head Neck Surg 1993;109:975–87.