Mycoplasma hominis and Ureaplasma urealyticum in midtrimester amniotic fluid: Association with amniotic fluid cytokine levels and pregnancy outcomeSriram C. Perni; Santosh Vardhana; Irina Korneeva; Sara L. Tuttle; Lilly-Rose Paraskevas; Stephen T. Chasen; Robin B. Kalish; Steven S. Witkin · 2004