Assessment of olfactory dysfunction
The Sniffin’ Sticks identification test was administered to assess olfactory function following a previously established protocol [Using the full TDI battery allow for a more comprehensive standard; however, the threshold of a 5-point change used for the full TDI battery (10% change relative to the maximal possible score of 48), is potentially less stringent than the 3-point change required when assessing differences with Identification alone, (19% change relative to the maximal possible score of 16) [