Dr. M. Kumaresan, an ENT surgeon from Chennai, India, has published research on puberphonia, a condition where males maintain a high-pitched, childlike voice beyond puberty. His work focuses on uvula manipulation and resonance (UMAR) as a treatment approach. According to Siva ENT Head & Neck Hospital, he has treated a large number of patients with this method. 

Key aspects of Dr. Kumaresan's work:

Dr. Kumaresan's approach, Uvula Manipulation and Resonance, aims to retrain the vocal apparatus by manipulating the uvula to achieve a more natural voice. 

Dr. Kumaresan has published his research on puberphonia, including articles in Acta Scientific Otolaryngology and other publications. He also presented his work at various forums and has been featured in online publications about voice disorders.