Barcelona Spain Tel: 34 935891572 Fax: 34 936754106 E-mail: drobnic@car.edu T. Haahtela Dept of Allergy Skin and Allergy Hospital Helsinki University Central Hospital FIN-00250 Helsinki Finland Fax: 385 947186500 E-mail: tari.haahtela@hus.fi K. Larsson Unit of Lung and Allergy Research Division of Physiology IMM Karolinska Institutet 171 77 Stockholm Sweden Tel: 46 87287433 Fax: 46 8300619 E-mail: kjell.larsson@imm.ki.se P. Palange Dipartimento di Medicina Clinica v.le Universita ` 37 00185 Rome Italy Tel: 39 0649972082 Fax: 39 064940421 E-mail: paolo.palange@uniroma1.it T.A. Popov Clinical Centre of Allergology Medical University 1, Sv. Georgi Sofiyski St. BG-1431 Sofia Bulgaria Tel: 359 29230397 Fax: 359 29230715 E-mail: tedpop@rtb-mu.com P. van Cauwenberge Dept of Otorhinolaryngology Ghent University De Pintelaan, 185 B-9000 Ghent Belgium Tel: 32 92402328 Fax: 32 92404993 E-mail: paul.vancauwenberge@Ugent.be 107