Haslett Christopher creator Edwin R. Chilvers, John A.A. Hunter, Nicholas A. Boon text Philadelphia Churchill Livingstone 1999 18th ed. monographic xi, 1175p.: ill(col),; 0443059446 https://www.amazon.com/Davidsons-Principles-Practice-Medicine-Christopher/dp/0443059446 https://www.amazon.com/Davidsons-Principles-Practice-Medicine-Christopher/dp/0443059446 20260128043031.0