%0 Journal Article %A Haytham M. El-Khushman %T A 69-year-old man with a thick dark pigmentation on his hands, and low back pain %D 2007 %J Saudi Medical Journal %P 1761-1762 %V 28 %N 11 %U https://smj.org.sa/content/smj/28/11/1761.full.pdf