Johan Hellgren

Simulated postnasal mucus fails to reproduce the symptoms of postnasal drip in rhinitics but only in healthy subjects.

V. Lund, J. Rimmer, Janet Rimmer, 2015, Rhinology.

Nasal nitric oxide and its relationship to nasal symptoms, smoking and nasal nitrate.

K. Torén, K. Nolkrantz, A. Olin, 1998, Rhinology.