IEEE affiliation blocks

Question

I'm using the IEEE format to write a paper. I have 4 authors from two institutions so I need blocks of affiliations. This is how I want it to look like:

Author 1*, Author 2#, Author 3#, Author 4*
Affiliation 1, {1,4}@abc.com
Affiliation 2, {2,3}@def.com

Note that the 1st and the 4th are from one institution, and the 2nd and the 3rd from another one.

Everything is centered, of course.

How to do this?

Answer 1

I found the solution. This is how it's done:

\documentclass[conference]{IEEEtran}
\author{
    \IEEEauthorblockN{Author1\IEEEauthorrefmark{1}, Author2\IEEEauthorrefmark{2}, Author3\IEEEauthorrefmark{2}, Author4\IEEEauthorrefmark{1}}
    \IEEEauthorblockA{\IEEEauthorrefmark{1}Institution1
    \\\{1, 4\}@abc.com}
    \IEEEauthorblockA{\IEEEauthorrefmark{2}Institution2
    \\\{2, 3\}@def.com}
}
\title{A title}
\begin{document}
\maketitle
\end{document}