Chaisilwattana, P., Fagnant , J.E. and RG Monif, G. 1991. Bacterial Interference by Group B Streptococci with Aerobic and Anaerobic Genital Tract Streptococci and Nonstreptococcal Aerobic Bacteria of the Female Genital Tract. Thai Journal of Obstetrics and Gynaecology. 3, 1 (Jan. 1991), 45–52.