Following the publication of the original article [1] it was brought to our attention that two minor errors were contained in the final article. Please see below for the sentences as they are now and how they should read upon revision:

Abstract, Results: We report that all three 5-HT receptors studied occur in neurons and satellite glial cells (SGCs) of the SPG.

This should read as:

We report that all three 5-HT receptors studied occur in neurons and nerve fibers of the SPG.

Discussion, first paragraph, line 6: Here we demonstrate that all three 5-HT receptor subtypes occur in neurons and SGCs of the rat SPG.

This should read as:

Here we demonstrate that all three 5-HT receptor subtypes occur in neurons and nerve fibers of the rat SPG.