This research paper, which has been widely cited, is referencing data that was collected from five years ago relative to its publication date, meaning the raw data is now even older.
Given the rapid advancements in this field over the last few years, there is a pressing need for an updated study.
The original study took two years to complete, from inception to its publication in that year (2018).
A proposal for a follow-up study was submitted six months ago, and we are awaiting a funding decision, expected next quarter.
The methodologies used in the original paper were considered groundbreaking at the time.