Edwards C, Whitfield K, Sudhakar S, Pearce M, Byrd G, Wood M, Feliu M, Leach-Beale B, DeCastro L, Whitworth E, Abrams M, Jonassaint J, Harrison MO, Mathis M, Scott L, Johnson S, Durant L, Holmes A, Presnell K, Bennett G, Shelby R, Robinson E. Parental substance abuse, reports of chronic pain and coping in adult patients with sickle cell disease. J Natl Med Assoc. 2006 Mar; 98(3):420-8.