Journal of Pain and Symptom ManagementVolume 16, Issue 3, September 1998, Pages 193-198Short communicationAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/S0885-3924(98)00071-2Get rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1998 Published by Elsevier Inc.