The Endogenous Pain Modulatory System as a Healing Mechanism: A Proposal on How to Measure and Modulate It oleh Paulo S. de Melo, Kevin Pacheco-Barrios, Anna Marduy, Karen Vasquez-Avila, Marcel Simis, Marta Imamura, Alejandra Cardenas-Rojas, Alba Navarro-Flores, Linamara Batistella, Felipe Fregni