Development of resistance after beta-lactam therapy.
D000293:Adolescent; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D004352:Drug Resistance, Microbial; D006801:Humans; D008297:Male; D011552:Pseudomonas Infections / Q000188:drug therapy*; D011550:Pseudomonas aeruginosa / Q000187:drug effects*; D047090:beta-Lactams
D000900:Anti-Bacterial Agents; D047090:beta-Lactams