©2013 National Research Council of Thailand
Orawan Ponngeon. 2005. Respiratory muscle strength in Thai healthy subjects aged 30-70 years. Field of Study Physical Therapy, Mahidol University;
Orawan Ponngeon. (2005) Respiratory muscle strength in Thai healthy subjects aged 30-70 years . Mahidol University/Bangkok.
Orawan Ponngeon. Respiratory muscle strength in Thai healthy subjects aged 30-70 years. . Bangkok:Mahidol University, 2005.
Orawan Ponngeon. (2005) Respiratory muscle strength in Thai healthy subjects aged 30-70 years . Mahidol University/Bangkok.