“…Preservation includes storage [18], [19], formatting [20], and visualization issues of computer-based questionnaires [21], that is, keeping information available and usable for future generations, requiring much more complex actions. Also, for digital materials (e.g., PDA [22], Web-based [9], touch screen [23], mobile [24], iPad [25], smartphone [26], and even stores in the cloud), there is a substantial difference between digitization and preservation. Notably, this phase was sparsely represented within MEDLINE.…”