/usr/include/ is in libvtkgdcm2-dev 2.0.18-7.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gdcm-2.0/
/usr/include/gdcm-2.0/vtkImagePlanarComponentsToComponents.h
/usr/include/gdcm-2.0/vtkGDCMThreadedImageReader2.h
/usr/include/gdcm-2.0/vtkGDCMTesting.h
/usr/include/gdcm-2.0/vtkImageMapToWindowLevelColors2.h
/usr/include/gdcm-2.0/vtkImageColorViewer.h
/usr/include/gdcm-2.0/vtkGDCMImageWriter.h
/usr/include/gdcm-2.0/vtkImageYBRToRGB.h
/usr/include/gdcm-2.0/vtkImageRGBToYBR.h
/usr/include/gdcm-2.0/vtkGDCMPolyDataWriter.h
/usr/include/gdcm-2.0/vtkGDCMMedicalImageProperties.h
/usr/include/gdcm-2.0/vtkLookupTable16.h
/usr/include/gdcm-2.0/vtkGDCMImageReader.h
/usr/include/gdcm-2.0/vtkImageMapToColors16.h
/usr/include/gdcm-2.0/vtkGDCMPolyDataReader.h
/usr/include/gdcm-2.0/vtkGDCMThreadedImageReader.h