1. Department of Paediatrics, Sahlgrenska Academy, Göteborg University, Göteborg, Sweden
2. Mariannes Akupunktur, C W Borgs väg 3, Stenungsund, Sweden
3. Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
4. Foundation for Acupuncture and Alternative Biological Treatment Methods, Sabbatsbergs Hospital, Stockholm, Sweden