Year	1992–1993	1994–1995	1996–1997	1998–1999	2000–2001
Number of patients (%)	6	2	5	8	9
Antibiotic prophylaxis (%)	5 (83)	2 (100)	5 (100)	8 (100)	1 9 (100)
Sterile necrosis (%)	3 (50)	0	3 (60)	3 (38)	2 (22)
Necrosis (bacteria only) (%)	2 (33)	2 (100)	1 (20)	4 (50)	5 (55)
Necrosis (fungi +/− bacteria) (%)	1 (17)	0	1 (20)	1 (13)	2 (22)