1. Pickering GW (1955) Introduction. In: High blood pressure. Grune & Stratton, New York, J & A Churchill, London, pp 1–7.
2. Bright R (1827) Reports of medical cases, selected with a view of illustrating the symptoms and cure of diseases by a reference to morbid anatomy. Longman, London.
3. Bright R (1836) Cases illustrative of the effects produced when the arteries and brain are diseased: selected chiefly with a view to the diagnosis in such affections. Guy’s Hosp Rep 1.
4. Pickering GW (1955) The classification of hypertension. In: High blood pressure. Grune and Stratton, New York, J and A Churchill, London, pp 122–130.
5. Tigerstedt R, Bergman PG (1898) Niere und Kreislauf. Scand Arch Physiol 8: 223–240.