Health related quality of life was measured with EORTC QLQ-C30 and EORTC QLQ-BR23 questionnaires in 5 assessments : after surgery just before group interventions started ( A1 ) , after the 3-week group interventions finished ( A2 ) ; and a follow-up period in 3 ( A3 ) , 6 ( A4 ) and 12 ( A5 ) months after surgical intervention .