1. Columbia University School of Nursing , 560 West 168th Street, Room 603, New York, NY 10032 , USA
2. Center for Sexual and Gender Minority Health Research, Columbia University School of Nursing , 560 West 168th Street, New York, NY 10032 , USA
3. Department of Biostatistics, Columbia Mailman School of Public Health , 722 West 168th Street, New York, NY 10032 , USA