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'much': [1124], 'alone': [1131], 'suggesting': [1135], 'potential': [1136], 'synergy': [1137], 'two': [1140], 'factors.': [1141], 'Larger': [1142], 'longer': [1145], 'needed': [1148], 'resolve': [1150], 'questions': [1151], 'specificity': [1153], 'synergy;': [1155], 'forthcoming': [1162], 'foreseeable': [1165], 'future.': [1166], 'Based': [1167], 'well-conducted': [1173], 'study,6Sheikh': [1176], 'building': [1212], 'previous': [1214], 'observational': [1215], 'studies,': [1218], 'now': [1221], 'favours': [1222], 'conclusion': [1224], 'several': [1235, 1286], 'sites.': [1237], 'Therefore,': [1238], 'causality': [1240], 'definitively': [1244], 'established,': [1245], 'provide': [1248], 'grounds': [1250], 'smoking': [1259], 'ingestion': [1261], 'confers': [1262], 'carcinogenic': [1263], 'hazards,': [1264], 'addition': [1266], 'health': [1270], 'effects.': [1271], 'I': [1272, 1298, 1329], 'member': [1275, 1304], 'BEACON,': [1277], "Barrett's": [1279], 'Esophageal': [1281], 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