Four odorants for olfactory training are enough: a pilot study.
Nicole Power GuerraEmely KruschwitzDietmar KrautwurstThomas HummelPublished in: European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery (2024)
Concluding, OT over a 3-months period with 4 or 7 odors appears to produce similar results, although the sample size has to be considered.
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