Chronic Q fever of pregnancy presenting as Coxiella burnetii placentitis: successful outcome following therapy with erythromycin and rifampicin - Bental,T.; Fejgin,M.; Keysary,A.; Rzotkiewicz,S.; Oron,C.; Nachum,R.; Beyth,Y.; Lang,R. (Clin Infect Dis, 1995)