Benchapron Chinrat. (1999) Efficiency of PCR for detection of Mycobacterium tuberculosis from sputum impregnated on filter paper at room temperature for 5 days. Mahidol University,:ม.ป.ท.Benchapron Chinrat. 1999. Efficiency of PCR for detection of Mycobacterium tuberculosis from sputum impregnated on filter paper at room temperature for 5 days. ม.ป.ท.:Mahidol University,;Benchapron Chinrat. Efficiency of PCR for detection of Mycobacterium tuberculosis from sputum impregnated on filter paper at room temperature for 5 days. ม.ป.ท.:Mahidol University, 1999. Print.