Nondrinkers do not appear to have a higher risk of esophageal cancer. Brooks and colleagues say health care providers should ask their patients about whether they experience redness after drinking alcohol. If so, this should be treated as a warning sign of heightened esophageal cancer risk, requiring screening.
These add-ons are equivalent to saving the file as a .dwg or .dxf file in the user interface. To save the files through the user interface, click Save As on the File menu. In the Save As dialog box, on the Save as type list, select AutoCAD Drawing (*.dwg) or AutoCAD Interchange (*.dxf).
Files that contain the .ccd file extension are most commonly used by the CloneCD software application. CloneCD is a CD backup software utility that was developed by SlySoft Inc to copy CDs that contain audio files or data. CCD files contain data about the logical structure of a CD that a user is copying.