00363nas a2200157   4500000000100000000000100001008004100002100001400043700001400057700001200071700001300083245007800096300001000174490000700184022001400191       2012                            d1 aM. Bodmer1 aC. Becker1 aS. Jick1 aC. Meier00aMetformin does not alter the risk of lung cancer: a case-control analysis  a133-70 v78  a0169-5002