The concordance of TRUE test applied in reverse directions on either side of the back.
Trattner
A
A
Department of Dermatology, Rabin Medical Center, Petah Tiqva, Israel.
David
M
M
D001415:Back; D006801:Humans; D010328:Patch Tests / Q000379:methods* / Q000592:standards*; D011237:Predictive Value of Tests