title: E-Learning: from useful to indispensable tool.
authors: Alessandro Wasum
authors: AW
authors: Mariani
authors: Ricardo Mingarini
authors: RM
authors: Terra
authors: Paulo Manuel
authors: PM
authors: Pêgo-Fernandes
mesh_terms: D003194:Computer-Assisted Instruction; D020375:Education, Distance; D004501:Education, Medical / Q000379:methods*; D006801:Humans; D020407:Internet; D007858:Learning