system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Singer's nodule is due to:
assistant
The correct answer is  Ans: d (Voice abuse)Ref: Dhingra E.N.T. 3rd/e p. 365 & 2nd/e p. 299