1. Elgood C . A medical history of Persia and the eastern caliphate from the earliest times to the year 1932 A.D. Cambridge University Press: London, England, 1951, pp 205–209.
2. Najm-Abadi M . The History of Medicine in Iran after Islam. Tehran University Press: Tehran, Iran, 1975, pp 425–476.
3. Siraisi NG . Avicenna in Renaissance Italy: the Canon and Medical Teaching in Italian Universities After 1500. Princeton University Press: Princeton, USA, 1987, pp 205–209.
4. Osler W . Evolution of Modern Medicine: A Series of Lectures Delivered at Yale University on the Silliman Foundation in April, 1913. Ayer Company Publishers, Incorporated Pub.: Manchester, USA, 1972, p 243.
5. Gorji A, Khaleghi Ghadiri M . History of headache in medieval Persian medicine. Lancet Neurol 2002; 1: 510–515.