Understanding the emerging role of ultrasound in Colombian emergency medicine residency training - P.C. Henwood; A.A. Genthon; D. Berversluis; C. Wilson; B.R. Norwood; M.G. Romero; Y.B. Martinez; A.C. Ocampo; C.E. Vallejo; C. Arbelaez (Ubiquity Press, 2014)