Pornprapa Chalearmpornpaisal. (2000) Risk factors of urinary tract infection in the elderly patients in Maharat Nakhonratchasima hospital. Mahidol University,:ม.ป.ท.Pornprapa Chalearmpornpaisal. 2000. Risk factors of urinary tract infection in the elderly patients in Maharat Nakhonratchasima hospital. ม.ป.ท.:Mahidol University,;Pornprapa Chalearmpornpaisal. Risk factors of urinary tract infection in the elderly patients in Maharat Nakhonratchasima hospital. ม.ป.ท.:Mahidol University, 2000. Print.