Polewczyk, Anna Large mass on the mitral valve in a woman in the 28th week of pregnancy. [electronic resource] - Polish archives of internal medicine 09 2017 - 633-634 p. digital Publication Type: Case Reports; Journal Article ISSN: 1897-9483 Standard No.: 10.20452/pamw.4109 doi Subjects--Topical Terms: AdultEndocarditis--complicationsFemaleHumansMitral Valve Insufficiency--drug therapyMitral Valve Stenosis--drug therapyPregnancy