RT Journal Article SR Electronic T1 Periodontal disease, tooth loss, and risk of oesophageal and gastric adenocarcinoma: a prospective study JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 620 OP 621 DO 10.1136/gutjnl-2020-321949 VO 70 IS 3 A1 Chun-Han Lo A1 Sohee Kwon A1 Liang Wang A1 Georgios Polychronidis A1 Markus D Knudsen A1 Rong Zhong A1 Yin Cao A1 Kana Wu A1 Shuji Ogino A1 Edward L Giovannucci A1 Andrew T Chan A1 Mingyang Song YR 2021 UL http://gut.bmj.com/content/70/3/620.abstract AB