Mycobacterium avium subspecies paratuberculosis causes Crohn's disease in some inflammatory bowel disease patients

Table 2 Studies not supporting mycobacterium avium subspecies paratuberculosis association with Crohn’s disease by Culture n (%)

Ref.	Crohn’s disease	Control
Clarkston et al[83]	0/21 (0)	NP
Dumonceau et al[105]	0/31 (0)	0/22 (0)
Graham et al[84]	6/19 (31.5)	7/17 (41)
Kallinowski et al[75]	0/21 (0)	0/24 (0)
Kreuzpaintner et al[85]	0/23 (0)	0/23 (0)
Parrish et al[73]	0/130 (0)	0/130 (0)
Ricanek et al[74]	2/75 (2.7)	2/135 (1.5)

NP: Not performed.