RT Journal Article SR Electronic T1 Black pleural effusion in melanoma JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E314 OP E314 DO 10.1503/cmaj.091312 VO 182 IS 8 A1 Wei-Chih Liao A1 Chia-Hung Chen A1 Chih-Yen Tu YR 2010 UL http://www.cmaj.ca/content/182/8/E314.abstract