Interventions for trichomoniasis in pregnancy.
Gulmezoglu AM.
Cochrane Database Syst Rev 2000;(2):CD000220
Abstract 

Evaluation of the centrifuged and Gram-stained smear, urinalysis, and reagent
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McNair RD, MacDonald SR, Dooley SL, Peterson LR.
Am J Obstet Gynecol 2000 May;182(5):1076-9
Abstract 

A population based case-control teratologic study of oral metronidazole treatment
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Czeizel AE, Rockenbauer M.
Br J Obstet Gynaecol 1998 Mar;105(3):322-7
Abstract