human 9 postoperative hemorrhage male 8 female 7 Article 6 Female 5 Humans 5 Male 5 adult 5 aged 4 major clinical study 4 middle aged 4 outcome assessment 4 Adult 3 Aged 3 Aged, 80 and over 3 Middle Aged 3 Postoperative Complications 3 Treatment Outcome 3 cohort analysis 3 postoperative complication 3 postoperative pain 3 procedures 3 prospective study 3 retrospective study 3 risk factor 3 treatment outcome 3 very elderly 3 Child 2 Child, Preschool 2