Edwards R C, Goldberg A D, Bannister R, Raftery E B
Lancet. 1976 Aug 21;2(7982):398-400. doi: 10.1016/s0140-6736(76)92410-7.
Comparisons with direct recordings show that the Physiometrics automatic blood-pressure recorder does not accurately reflect intra-arterial pressure and tends to over-read both systolic and diastolic pressures.