Text and Data Mining valid from 2020-02-12
First Online: 12 February 2020
Compliance with Ethical Standards
: In addition to the funding sources acknowledged above, during the past year, Dr. Shacklett acted as a Consultant for Merck, Sharp & Dohme. The authors report no conflict of interest that could be interpreted to influence this work.
: All reported studies/experiments with human or animal subjects performed by the authors have been previously published and complied with all applicable ethical standards (including the Helsinki declaration and its amendments, institutional/national research committee standards, and international/national/institutional guidelines).