Levine, J F Penicillin sensitive nutritionally variant streptococcal endocarditis: relapse after penicillin therapy. [electronic resource] - The American journal of the medical sciences - 31-6 p. digital Publication Type: Case Reports; Journal Article ISSN: 0002-9629 Standard No.: 10.1097/00000441-198307000-00005 doi Subjects--Topical Terms: AgedDrug SynergismEndocarditis, Bacterial--drug therapyGentamicins--pharmacologyHumansMaleMicrobial Sensitivity TestsPenicillin ResistancePenicillins--pharmacologyRecurrenceStreptococcal Infections--drug therapyStreptococcus--drug effects