[1] REGAM Medical Systems AB, C/o Mitthögskolan, S-851 70, Sundsvall, Sweden
[2] IMC AB, Electrum 229, S-164 40, Kista, Sweden
[3] University of Glasgow, Dept. of Physics and Astronomy, Glasgow, United Kingdom
[4] AIXTRON AG, Aachen, Germany
[5] Kungl Tekniska Högskolan, Dept. of Electronics, Kista, Sweden
[6] Karolinska Institutet, Dept. of Oral Radiology, Huddinge, Sweden