c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: High Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Low Grade Dsyplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")
c("degree of dysplasia: Simple intestinal metaplasia", "biopsy site: Barrett's Oesophagus segment")