I need to mark that two authors contributed equally and would like to do this using a footnote. My document class is as below - I must use this template.
\documentclass[conference,a4paper]{IEEEtran}
\begin{document}
\title{My title}
\author{\IEEEauthorblockN{Author One\IEEEauthorrefmark{1}, Author 2\IEEEauthorrefmark{2}, Author 3\IEEEauthorrefmark{3} and Author 4\IEEEauthorrefmark{1}}
\IEEEauthorblockA{\IEEEauthorrefmark{1} Affiliation 1}
\IEEEauthorblockA{\IEEEauthorrefmark{2} Affiliation 2}
\IEEEauthorblockA{\IEEEauthorrefmark{3} Affiliation 3}
}
\end{document}
How can I add another symbol next to Authors One and Two and have a footnote on the first page that says "These authors contributed equally"?