Mode effects in surveys of gay men: A within-individual comparison of responses by mail and by telephone.

Michael Acree, Maria Ekstrand, Thomas J. Coates, Ron Stall. Mode effects in surveys of gay men: A within-individual comparison of responses by mail and by telephone. The Journal of Sex Research. 1999 Feb 1; 36(1):67-75.

1999
https://researcherprofiles.org/profile/84563281

Michael Acree, Maria Ekstrand, Thomas J. Coates, Ron Stall