Distr ibution of Haemophilus actinomycetemcomitans in Chronic Per iodontitis Patients and Per iodontally Healthy Subjects
MENG Shu1, WU Ya- fei2, YANG He1, ZHAO Lei1, OU- YANG Yu- ling1
West China Journal of Stomatology . 2007, (01): 42 -45 .