This page entitled "Before you read another health study, check who's funding the research":
https://www.theguardian.com/lifeandstyle/2016/dec/12/studies-health-nutrition-sugar-coca-cola-marion-nestle
says "New York University nutrition professor Marion Nestle began informally tracking studies...
Plenty of diabetics are not satisfied with the accuracy of their BG meter. Some of them also noticed different BG readings with same blood sample on different BG meters. The reason might be "artificial" systematic bias implemented by manufactures into BG meters.
There has been made independent...