documentclass[a4paper,12pt]{article}

title{Here goes the title}
author{Here goes my name}
date{today}

usepackage{amsmath}

usepackage{amssymb}

usepackage[english]{babel}

usepackage[pdftex]{graphicx}

usepackage{apacite}

begin{document}
maketitle

Here is the text

bibliographystyle{apacite}
bibliography{HL_Literature}

end{document}

! Misplaced alignment tab character &.
<argument> ...ov/articlerender.fcgi?artid=3153785&
tool=pmcentrez&rendertype=...
l.115 pmcentrez&rendertype=abstract}
end{APACrefURL}
I can't figure out why you would want to use a tab mark
here. If you just want an ampersand, the remedy is
simple: Just type `I&' now. But if some right brace
up above has ended a previous alignment prematurely,
you're probably due for more error messages, and you
might try typing `S' now just to see what is salvageable.