Author: William H. Dietz, Loel S. Solomon, Nico Pronk, Sarah K. Ziegenhorn, Marion Standish, Matt M. Longjohn, David D. Fukuzawa, Ihuoma U. Eneli, Lisel Loy, Natalie D. Muth, Eduardo J. Sanchez, Jenny Bogard, Don W. Bradley
Author: Thomas Gaziano, Shafika Abrahams-Gessel, Sam Surka, Stephen Sy, Ankur Pandya, Catalina A. Denman, Carlos Mendoza, Thandi Puoane, Naomi S. Levitt
