<unk> <unk>  of<unk>  (1746–1792) was determined to prove the negative health effects of<unk> .<unk>  was a purported twin study ordered by the king to study the health effects of<unk> . The authenticity of the event has been questioned. The<unk> , supposedly conducted in the second half of the 18th century, failed to prove that<unk>  was a dangerous beverage.
Gustav III of Sweden's coffee experiment
CHIVA method
NDR Method
Darrow Yannet diagram
Harrington–Hollingsworth experiment
Kick chart
Berenson-Eggers Type of Service
EFAR System Model