Article: Author information when occupation has changed I'm currently the main author of a paper. The work was performed when I was working at university X. However, I will start at a new university Y in one month, and the conference I'm presenting the work at is in two months. So, while presenting the paper I will be working at university Y (but the work was performed during my time at university X).

My question is the following, how would you present the author information:

A)   

Both universities in the main information.

First name, Lastname (1, 2)  

(1) University X 
email@university_X.com  

(2) University Y 
email@university_Y.com


B)  

Name and previous affiliation (where the work was completed) as the main information and the current affiliation in a footnote.

First name, Lastname 
(Footnote: 'Currently working at University Y, email@university_Y.com')  
University X 
email@university_X.com  


or C)  

Name and current affiliation as the main information and the previous affiliation (where the work was completed) in a footnote.

First name, Lastname 
(Footnote: 'Work completed at University X, email@university_X.com')  
University Y, 
email@university_Y.com  


Or do you have any other suggestions?
This may be specific to journal, research area, whatnot. However, in a recent edition of Applied Physics Letters one finds in the author list:



The "2" corresponds to an institute in the affiliations list (other authors have other affiliations) where the author was at during the work. 

The "a)" links to:



Followed by the new address for that person. 

Other uses for footnotes include email addresses and apportioning credit.

This is how it was done some 25 years ago when I last changed institutions.