RT Journal Article SR Electronic T1 The authors respond to “Supporting the call for a gender-neutral human papillomavirus vaccination in Canada” JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E119 OP E119 DO 10.1503/cmaj.732630 VO 189 IS 3 A1 Shapiro, Gilla K. A1 Perez, Samara A1 Rosberger, Zeev YR 2017 UL http://www.cmaj.ca/content/189/3/E119.abstract