How can I get rid of the two lines resulting from empty abstraction and keyword sections? Thanks.

The code is
\documentclass[preprint,12pt]{elsarticle}
\usepackage[nodots]{numcompress}
\biboptions{sort&compress}
\journal{A Journal}
\begin{document}
\begin{frontmatter}
\title{My Title}
\author[myaddr]{Author 1}
\author[myaddr]{Author 2}
\address[myaddr]{An Address}
%% \begin{abstract}
%% Here's an abstract.
%% \end{abstract}
%% \begin{keyword}
%% keyword1 \sep keyword2 \sep keyword3
%% \end{keyword}
\end{frontmatter}
\section{Introduction}
\label{intro}
\end{document}

articleetc. – May 19 '15 at 21:12articlemake the similar thing for author and their addresses as inelsarticle? – Tim May 19 '15 at 21:18\authoris basically the same, the addresses however do not work this way, unfortunately. If you need them, you have to workarounds or ... stick toelsarticle(or another class). – May 19 '15 at 21:22