1. Department
of Applied Environmental
Science (ITM), Stockholm University, SE-106
91 Stockholm, Sweden
2. Swedish National Heritage Board, Box 1114, 621 22 Visby, Sweden
3. IVL Swedish Environmental Research Institute, Box 21060, SE-10031 Stockholm, Sweden
4. Public Health Sciences, Occupational
and Environmental Medicine, Karolinska Institutet, Norrbacka, fourth level, SE-17176 Stockholm, Sweden