Fig. 1.

The flow of women in the invitation protocol. ^a Includes 324 women in lavage-device arm and 329 women in the brush-device arm who attended before the invitation was sent or made an appointment for screening (e.g., by phone) and thus received no invitation letter. ^b Women received an information letter about the up-coming self-sampling test with an opt-out option. ^c Out of all women to whom self-sampling was offered to