Enlaces:
[1] http://www.jccjournal.org/article/S0883-9441%2816%2930121-6/fulltext?elsca1=etoc&elsca2=email&elsca3=0883-9441_201610_35__&elsca4=Anesthesiology%7CPain%20Medicine%7CCritical%20Care%20Medicine
[2] http://privada.semicyuc.org/temas/publicaciones