If your file is very large (>5 Mb) ... it's probably because of large images.  This can easily be fixed and your file can be compressed to email-able size.   Here's the steps..

 

1) Just RIGHT click on one of the images in the open presentation ... Choose FORMAT PICTURE

2) Click PICTURE tab,  COMPRESS,

3) Click Apply to: ALL PICTURES IN DOCUMENT, Change resolution: WEB/SCREEN, Options:  Compress pictures, Delete cropped areas of pictures -YES

4) Do you want to apply picture optimization:  APPLY

5) Save your new file with all the pics compressed.

Send it in !!!     sinaisurgery@gmail.com