5.1.3 It is preferred that the study be completed in a time-span of ten calendar weeks, however if the subject or practitioner is unable to attend an appointment during a scheduled week, that week will not count as a study week, and it will be designated a skipped week. Only two skipped weeks will be allowed, so the maximum length of the study will be twelve calendar weeks. Subjects will not complete questionnaires during skipped weeks, and skipped weeks may not be consecutive.