This can be a solution, with no need for the authblk package.

Complete MWE:
\documentclass{article}
\makeatletter
\def\and{%
\end{tabular}%
\begin{tabular}[t]{c}}%
\def\@fnsymbol#1{\ensuremath{\ifcase#1\or a\or b\or c\or
d\or e\or f\or g\or h\or i\else\@ctrerr\fi}}
\makeatother
\begin{document}
\title{Systemic Risk and Cross-Sectional Hedge Fund Returns}
\author{S. Brown,\thanks{Department of Finance.} \and
I. Hwang,\footnotemark[1] \and
F. In,\thanks{Department of Accounting and Finance.} \and
and T. S. Kim\thanks{KAIST Business School.}}
\maketitle
\begin{abstract}
This paper examines the cross-sectional relation between the systemic risk contribution of
hedge funds and hedge fund returns. Measuring the systemic risk of an individual hedge fund
by using the marginal expected shortfall (MES), we find evidence for a positive and
statistically significant relation between systemic risk and hedge fund returns. The risk-adjusted
return of a hedge fund portfolio with a high systemic risk is 0.64\% per month higher
than for one with a low systemic risk during 1994--2012, while negative performance is
observed during crisis periods. The relation between systemic risk and hedge fund returns
holds for both live and defunct funds. Moreover, the relation holds even after controlling for a
large set of fund characteristics. Hence, systemic risk is a powerful determinant of cross-sectional
variations in hedge fund returns. Because hedge funds with a high systemic risk
contribution tend to have high downside beta, these results imply that investors are willing to
demand a premium to carry tail risk during systemic events.
\end{abstract}
\end{document}
Note that I've redefined the commands \and and \@fnsymbol (which is responsible of the \thanks marks) taking their original definition from latex.ltx.
\makeatletter
\def\and{%
\end{tabular}%
\begin{tabular}[t]{c}}%
\def\@fnsymbol#1{\ensuremath{\ifcase#1\or a\or b\or c\or
d\or e\or f\or g\or h\or i\else\@ctrerr\fi}}
\makeatother
I've also used \footnotemark[1] to use the same mark used by the first \thanks command.
.pdf:-) – karlkoeller Oct 01 '13 at 04:52