In the original publication of article “Abstract” section was published with an error. The corrected version Abstract is given below:

Unfortunately, the original publication of this article contained an error in second author's affiliation. The correct affiliation is given correction.

An error occurred during the publication of a number of articles in BMC Palliative Care. These articles were erroneously published in volume number 17, which is listed with a publication date of 2018. However, these articles were published in final form in the year 2017. Provided below are the actual publication dates and the correct citation for each affected article. Please note that the cita...

Unfortunately, the original publication of article has been published with an error in footnote 32. The 32 should read as follows.

© 2013 Okereke et al.; licensee BioMed Centra Commons Attribution License (http://creativec reproduction in any medium, provided the or waiver (http://creativecommons.org/publicdom stated. this publication, corrections in Table two (Table 1 here) are being reflected in this publication of a correction to the article. Sincere apologies are expressed for any inconveniences this error in particula...

Andrew S. Fletcher,* Peter W. Shor, and Moe Z. Win Laboratory for Information and Decision Systems, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massuchesetts 02139, USA MIT Lincoln Laboratory, 244 Wood Sreet, Lexington, Massachusetts 02420, USA Department of Mathematics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139...