Operationalizing and analyzing 2-step gender identity questions: Methodological and ethical considerations. - Kacie M. Kidd; Gina M. Sequeira; Scott D. Rothenberger; Taylor Paglisotti; Alfgeir Kristjansson; Kelsey Schweiberger; Elizabeth Miller; Robert W. S. Coulter (J. Am. Medical Informatics Assoc., 2022)