Johan Hellgren

Allergic rhinitis and the common cold – high cost to society

Johan Hellgren, Anders Cervin, S. Nordling et al. · Allergy · 2009 · 182 citations

TOTALL: high cost of allergic rhinitis—a national Swedish population-based questionnaire study

Lars‐Olaf Cardell, Petter Olsson, Morgan Andersson et al. · npj Primary Care Respiratory Medicine · 2016 · 135 citations · Full text

Analysis of feedback cancellation in hearing aids with Filtered-x LMS and the direct method of closed loop identification

Johan Hellgren · IEEE Transactions on Speech and Audio Processing · 2002 · 113 citations

Closed Loop Identification, Adaptive Filter, Speech Recognition +15

Bias of feedback cancellation algorithms in hearing aids based on direct closed loop identification

Johan Hellgren, Fabrice Urban · IEEE Transactions on Speech and Audio Processing · 2001 · 71 citations

Acoustic Feedback, Engineering, Speech Enhancement +19

Rhinitis increase the risk for adult-onset asthma—a Swedish population-based case-control study (MAP-study)

Kjell Torén, A.-C. OLIN, Johan Hellgren et al. · Respiratory Medicine · 2002 · 67 citations · Full text

Asthma, Allergy, Respiratory Diseases +6