1. Authors and criteria of authorship
Sadeghi Ramin, MD
Nuclear Medicine Research Center,
Mashhad University of Medical Sciences

2. Vancouver criteria
Criteria set by “International Committee of Medical Journal Editors”

4. Ghost writing
With medical ghostwriting, pharmaceutical companies pay both professional writers to produce papers and then pay other scientists or physicans to attach their names to these papers before they are published in a medical or scientific journals.

5. Ghost writing
These scientists or physicians often have little involvement in the research or the writing process
This is under significant scrutiny

6. Honorary (guest) authors
Authors who have not met the criteria of authorship

7. Order of the authors
The first and the last authors are the most important
The corresponding author is also important regarding points for promotion
It is recommended to introduce the last author as the corresponding

9. Who is to be in the acknowledgment
All contributors who do not meet the criteria for authorship should be listed in an acknowledgments section

11. How to write an acknowledgement
This study was supported by a grant from vice chancellor of research of Mashhad university of medical sciences
We wish to thank X for his/her contribution as …..
This study was the result of a thesis with approval number of….

12. Group work Prepare an acknowledgement for an article Financial support
Statistical analysis
English editing
Others