TY - JOUR A1 - Kim, H.J. A1 - Fredriksen-Goldsen, K.I. T1 - Nonresponse to a question on self-identified sexual orientation in a public health survey and its relationship to race and ethnicity Y1 - 2013 DO - 10.2105/AJPH.2012.300835 VL - 103 IS - 1 ER -