/usr/include/ is in libvtkgdcm2-dev 2.2.4-1.1ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gdcm-2.2/
/usr/include/gdcm-2.2/vtkImageYBRToRGB.h
/usr/include/gdcm-2.2/vtkGDCMPolyDataWriter.h
/usr/include/gdcm-2.2/vtkImageRGBToYBR.h
/usr/include/gdcm-2.2/vtkGDCMThreadedImageReader.h
/usr/include/gdcm-2.2/vtkRTStructSetProperties.h
/usr/include/gdcm-2.2/vtkGDCMMedicalImageProperties.h
/usr/include/gdcm-2.2/vtkLookupTable16.h
/usr/include/gdcm-2.2/vtkImageMapToWindowLevelColors2.h
/usr/include/gdcm-2.2/vtkGDCMTesting.h
/usr/include/gdcm-2.2/vtkImageMapToColors16.h
/usr/include/gdcm-2.2/vtkImagePlanarComponentsToComponents.h
/usr/include/gdcm-2.2/vtkGDCMImageReader.h
/usr/include/gdcm-2.2/vtkGDCMPolyDataReader.h
/usr/include/gdcm-2.2/vtkGDCMImageWriter.h
/usr/include/gdcm-2.2/vtkImageColorViewer.h
/usr/include/gdcm-2.2/vtkGDCMThreadedImageReader2.h