[1] Tech Univ Munich, Chair Ecoclimatol, Freising Weihenstephan, Germany
[2] Tech Univ Munich, Inst Adv Study, D-8046 Garching, Germany
[3] Poznan Univ Life Sci, Inst Zool, Poznan, Poland
[4] Univ Autonoma Barcelona, Bot Unit, Bellaterra, Spain
[5] Univ Autonoma Barcelona, Inst Environm Sci & Technol ICTA, Bellaterra, Spain
[6] Charite, Allergie Ctr Charite, D-13353 Berlin, Germany
[7] Agenzia Prov Ambiente, Biol Lab, Laives, BZ, Italy
[8] Univ Roma Tor Vergata, Dipartimento Biol, I-00173 Rome, Italy
[9] Aristotle Univ Thessaloniki, Sch Biol, Dept Ecol, GR-54006 Thessaloniki, Greece
[10] Sci Inst Publ Hlth, Sect Mycol & Aerobiol, Brussels, Belgium
[11] Univ Cordoba, Dept Bot Ecol & Plant Physiol, Cordoba, Spain
[12] Fed Off Meteorol & Climatol MeteoSwiss, Zurich, Switzerland
[13] Adam Mickiewicz Univ, Lab Aeropalynol, Poznan, Poland
[14] Univ Complutense Madrid, Dept Plant Biol 2, Madrid, Spain
[15] Iceland Inst Nat Hist, Gardabaer, Iceland
[16] Ctr Hosp Luxembourg, Stn Aerobiol, Luxembourg, Luxembourg
[17] Jagiellonian Univ, Coll Med, Dept Clin & Environm Allergol, Krakow, Poland
[18] Natl Inst Environm Hlth, Dept Biol, Budapest, Hungary
[19] Univ Worcester, Natl Pollen & Aerobiol Res Unit, Worcester, England
[20] Reseau Natl Surveillance Aerobiol, Brussieu, France
[21] Univ Gdansk, Lab Palaeoecol & Archaeobot, PL-80952 Gdansk, Poland
[22] Univ Leon, Dept Biodivers & Environm Management, E-24071 Leon, Spain
[23] Polleninformat Dienst Deutschland PID, Ganderkesee, Germany
[24] Leiden Univ, Med Ctr, Dept Pulmonol, Leiden, Netherlands