author = { Ulloa-Aguirre, Alfredo AND Kershenobich-Stalnikowitz, David },

title = { Preface },

publisher = {Publicidad Permanyer, SLU},

isbn = {0034-8376},

keywords = { General Medicine },

year = {2021},

url = { http://slubdd.de/katalog?TN_libero_mab2 }