Statement of Authorship

Category 1

1. 
   Conception and Design
   Morris Levin
   
2. 
   Acquisition of Data
   Morris Levin
   
3. 
   Analysis and Interpretation of Data
   Morris Levin
   

Category 2

1. 
   Drafting the Manuscript
   Morris Levin
   
2. 
   Revising It for Intellectual Content
   Morris Levin
   

Category 3

1. 
   Final Approval of the Completed Manuscript
   Morris Levin