[Basic studies of changes of bacteria isolated from surgical patients].
D000328:Adult; D000368:Aged; D013505:Digestive System Surgical Procedures; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000382:microbiology; D010614:Pharynx / Q000382:microbiology; D011184:Postoperative Period; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification*; D013211:Staphylococcus aureus / Q000302:isolation & purification*; D013514:Surgical Procedures, Operative