title: Three cases of erythema nodosum associated with Yersinia enterocolitica infection.
mesh_terms: D000328:Adult; D004893:Erythema Nodosum / Q000209:etiology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious; D015009:Yersinia Infections / Q000150:complications*; D015008:Yersinia enterocolitica / Q000302:isolation & purification