Additive interactions between PRKAA1 polymorphisms and Helicobacter pylori CagA infection associated with gastric cancer risk in Koreans oleh Sang‐Yong Eom, Seon‐Mi Hong, Dong–Hyuk Yim, Hyo‐Jin Kwon, Dae‐Hoon Kim, Hyo‐Yung Yun, Young‐Jin Song, Sei‐Jin Youn, Taisun Hyun, Joo‐Seung Park, Byung Sik Kim, Yong‐Dae Kim, Heon Kim