119 Chapter 6 Invited for questionnaire (n = 328) Fully completed questionnaire (n = 195) Partially completed (n = 30) High bleeding score (n = 81) Low bleeding score (n = 114) Approached for this study (n = 23) Approached for this study (n = 19) Excluded (n = 10) Did not want to participate in extra laboratory tests (n = 10) Did not want to participate in extra laboratory tests (n = 4) Known pre-existing bleeding disorders (n = 2) Use of anticoagulans (n = 5) Other (n = 1) Included (n = 11) Excluded (n = 12) Included (n = 9) Not filled in questionnaire (n = 103) Figure 1 Selection procedure of study participants
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