When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
By Alexander C. Wagenaar, Rosalie Liccardo Pacula, Scott Burris. ROSALIE LICCARDO PACULA, PhD, holds the Elizabeth Garrett Chair in Health Policy, Economics & Law in the Sol Price School of Public Policy at the University of Southern California.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.