title: Learning curves, credentialing, and the need for ultrasound fellowships.
authors.forename: David J
authors.initials: DJ
authors.lastname: Heegeman
authors.forename: Burney
authors.initials: B
authors.lastname: Kieke
mesh_terms: D000068:Accreditation; D004635:Emergency Medicine / Q000193:education*; D005257:Fellowships and Scholarships; D006801:Humans; D007858:Learning; D014463:Ultrasonography