・ABX for extensively drug-resistant pseudomonal infection (resistant to fluoroquinolone, carbapenem, aminoglycoside) intravenous colistin (polymyxin E) ・first recurrance of mild to moderate C.difficile colitis metronidazole for 14 days …

・diagnostic test for patient with 1 week constant headache, worse in the morning, no focal sign, with bilateral papilledema, valsalva maneuver increase pain, using tobacco and oral contraceptive, normal brain MRI without contrast MR venog…