00419nas a2200157   4500000000100000000000100001008004100002100001400043700001400057700001200071700001700083245012700100300001200227490000800239022001400247       2012                            d1 aS. Langan1 aR. Groves1 aT. Card1 aM. Gulliford00aIncidence, mortality, and disease associations of pyoderma gangrenosum in the United Kingdom: a retrospective cohort study  a2166-700 v132  a0022-202x