Style Error: [Environmental Geochemistry and Health]
According to the journal's instructions, the citations in the text SHOULD NOT have a comma delimiter between the author and date (see instructions for authors at http://www.springer.com/environment/environmental+health+-+public+health/journal/10653).
FYI, for this journal, there is also a difference in the author name listings in the bibliography - the existing style lists the first 5 authors followed by ...last author, while this journal wants the first 6 authors followed by et al.