Antimicrobial Contribution of Chitosan Surface-Modified Nanoliposomes Combined with Colistin against Sensitive and Colistin-Resistant Clinical <i>Pseudomonas aeruginosa</i> oleh Valentina Laverde-Rojas, Yamil Liscano, Sandra Patricia Rivera-Sánchez, Ivan Darío Ocampo-Ibáñez, Yeiston Betancourt, Maria José Alhajj, Cristhian J. Yarce, Constain H. Salamanca, Jose Oñate-Garzón