Hongnuttha Sittikool. 2004. Effect of respiratory muscle training on functional capacity and quality of life in COPD patients. Field of Study Physiotherapy, Mahidol University;

Hongnuttha Sittikool. Effect of respiratory muscle training on functional capacity and quality of life in COPD patients. . Bangkok:Mahidol University, 2004.

Hongnuttha Sittikool. (2004) Effect of respiratory muscle training on functional capacity and quality of life in COPD patients . Mahidol University/Bangkok.