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| Reference | Intervention 1 | Intervention 2 |
| Sabat 1998 | Quinolone | Quinolone plus cephalosporin |
| Spanish Group 1998 | Quinolone (Norfloxacin) | Quinolone (Ofloxacin) |
| Gulberg 1999 | Cephalosporin low dose | Cephalosporin high dose |
| Lata 2005 | Quinolone | beta‐lactams |
| Fernandez 2006 | Quinolone | Cephalosporin |
