316) In what month and year was the sterilization preformed?
316A) For how long have you been using (CURRENT METHOD) now without stopping?
PROBE: In what month and year did you start using (CURRENT METHOD) continuously?

331A. Since what month and year have you been using (CURRENT METHOD) without stopping? PROBE: For how long have you been using (CURRENT METHOD) now without stopping?

308A) Since what month and year have you been using (CURRENT METHOD) without stopping?
PROBE: For how long have you been using (CURRENT METHOD) now without stopping?

309. Since what month and year have you been using (CURRENT METHOD) without stopping?
PROBE: For how long have you been using (CURRENT METHOD) now without stopping?