Translations:Advanced Field Epi:Manual 1 - Disease Investigation/392/en
Once a list of potential sources has been identified, selected items can usually be saved to a text file, or often to a reference manager. Abstracts of papers listed on PubMed and Medline are often available on-line free of charge, but copies of the full papers will usually need to be either purchased on-line, or obtained as downloads or photocopies through a library service (usually government agencies or universities).