Antonius H N Cillessen, Tessa A M Lansu
Stability, correlates, and time-covarying associations of peer victimization from grade 4 to 12
Journal of clinical child and adolescent psychology : the official journal for the Society of Clinical Child and Adolescent Psychology, American Psychological Association, Division 53
since discovery antimicrobial drugs proved remarkably effective control bacterial infections however soon evident bacterial pathogens unlikely surrender unconditionally pathogens rapidly became resistant many first effective drugs example development resistance penicillin staphylococcus aureus production lactamase quickly decreased usefulness penicillin serious staphylococcal infections especially among hospitalized patients resistant strains frequently found spread community1 initially problem bacterial resistance antimicrobial drugs solved discovery