https://www-users.york.ac.uk/~mb55/datasets/pefr.dct - The Close systolic blood pressure dataset from Martin Bland's website
https://www-users.york.ac.uk/~mb55/datasets/datasets.htm - Martin Bland's example data-set webpage
Bland JM, Altman DG. (1995) Comparing methods of measurement: why plotting difference against standard method is misleading. Lancet, 346, 1085-7.