Long-Term Pollen Monitoring in the Benelux: Evaluation of Allergenic Pollen Levels and Temporal Variations of Pollen Seasons, de Weger, Letty A., Bruffaerts Nicolas, Koenders Mieke M. J. F., Verstraeten Willem W., Delcloo Andy W., Hentges Pierre, and Hentges François , Frontiers in Allergy, Aug-07-2021, Volume 2, (2021)