This continues a decade - long, systematic investigation of gray, which she feels has been historically overlooked in color painting. (minusspace.com)
So, it requires systematic investigation to determine exactly what is causing these symptoms and whether gluten intolerance may be a reason. (forkoffgluten.com)
To our defense, rashes look very similar, and require very systematic investigation if the diagnosis is not readily apparent in office. (thenatpath.com)