%0 Journal Article %T Acquired Melanonychia in Chilean Patients with Essential Thrombocythemia Treated with Hydroxyurea: A Report of 7 Clinical Cases and Review of the Literature %A Nigel P. Murray %A Pablo Tapia %A Jose Porcell %A Maximiliano Echavarria %J ISRN Dermatology %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/325246 %U http://dx.doi.org/10.1155/2013/325246