title: Blood loss during periodontal flap surgery.
mesh_terms: D000539:Alveolar Process / Q000601:surgery; D001794:Blood Pressure; D001811:Blood Volume Determination; D005260:Female; D005890:Gingivectomy / Q000009:adverse effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D006472:Oral Hemorrhage / Q000097:blood / Q000209:etiology*; D010027:Osteotomy / Q000009:adverse effects; D010519:Periodontium / Q000601:surgery*