20a. When did you have your (most recent) mammogram?
Month ____ [if 3 years ago or less (21); if more than 3 years ago (24)] Year 19____ [if 3 years ago or less (21); if more than 3 years ago (24)] OR
Number ____
1[] Days ago [if 3 years ago or less (21); if more than 3 years ago (24)] 2[] Weeks [if 3 years ago or less (21); if more than 3 years ago (24)] 3[] Months ago [if 3 years ago or less (21); if more than 3 years ago (24)] 4[] Years ago [if 3 years ago or less (21); if more than 3 years ago (24)]