Procalcitonin-Guided Antibiotic Use. - Pulia, Michael S.; Schulz, Lucas T.; Fox, Barry C.; Bremmer, Derek N.; Shively, Nathan R.; Walsh, Thomas L.; Spellberg, Brad; Gaffin, Neil; Huang, David T; Yealy, Donald M; Angus, Derek C; the ProACT Investigators (New England Journal of Medicine, 2018)