1. Department of Biology and Integrated Bioscience Program; The University of Akron; Akron OH 44325 USA
2. Institute of Microstructure Technology; Karlsruhe Institute of Technology; 76344 Eggenstein-Leopoldshafen Germany
3. Department of Electrical and Computer Engineering; University of Nebraska-Lincoln; Lincoln NE 68588 USA
4. Biology Department; Terrestrial Ecology Unit; Ghent University; Ledeganckstraat 35 9000 Ghent Belgium