This collection contains data associated with a publication, including journal articles, monographs, and theses and dissertations, among others. Data sets in this collection are classified as supplementary data or underlying data. Supplementary data typically accompany the publication and include files such as tables, figures, or other files that the authors were unable to include in their publication or files that their publisher was unable to include on its website. Supplementary data are not necessary for the replication or reproduction of research results reported in the publication. Underlying data are files that contain the results reported in the paper as well as the files that are necessary for the interpretation, replication, and reproduction of the results, such as analysis software and metadata.