6Hillis,SD,Nakashima,A,Marohbanks,PA,et al.Risk factors for recurrent Chlamydia trachomatis infections in women. American Journal of Obstetrics and Gynecology . 1994
7Pao,CC,Yao Ding-shyan,Lin Chieh-Yu,et al.Prenatal transmission of hepatitis B virus to neonates born to serum bepatitis B Virus DNA-positive mothers. The American Journal of Perinatology . 1992
