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SUMMER 2001 (Study 1) NOVEMBER 2002 (Study 2) FEBRUARY 2003. 333 Invitation Letters Sent in Summer 2001; criterion 25(OH)D <61 nmol/L. 93 Signed Consents Received, patients randomized, and 1 st questionnaire completed.
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SUMMER 2001 (Study 1) NOVEMBER 2002 (Study 2) FEBRUARY 2003 333 Invitation Letters Sent in Summer 2001; criterion 25(OH)D <61 nmol/L 93 Signed Consents Received, patients randomized, and 1st questionnaire completed 37 Patients completed both Questionnaires of Winter 2001-2; i.e. per protocol 324 Invitation Letter Sent in Summer 2002 to new patients; criterion 25(OH)D <51 nmol/L 46 Continue with the study 66 Signed Consents Received, patients randomized, and 1st questionnaire completed 31 Continuers Complete Both Questionnaires of Winter 2002-3 51 New Participants complete both Questionnaires of Winter 2002-3