RT Journal Article SR Electronic T1 Unexpected expectoration. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 596 DO 10.1136/jcp.41.5.596-a VO 41 IS 5 A1 M Sundaresan A1 A B Price YR 1988 UL http://jcp.bmj.com/content/41/5/596.1.abstract AB