Table 1 Studies with epidemiological design of reference centers
Author | Country | Type of study | Population | Synchronous number of cases | Number of synchronous renal and gastric cases |
|---|---|---|---|---|---|
Ha et al. [17] | Korea | Retrospective cross-sectional | 10,090 | 90 | 11 |
Ławniczak et al. [18] | Poland | Retrospective cross-sectional | 862 | 23 | 1 |
Jiménez et al. [22] | Spain | Case series | 25 | 7 | 1 |
Bang et al.. [2] | Korea | Retrospective cohort | 4593 | 49 | 9 |
Lee et al.. [3] | Korea | Retrospective cross-sectional | 3291 | 115 | 5 |
Kim et al.. [4] | Korea | Retrospective cross-sectional | 41 | 17 | 3 |
Ikeda et al. [26] | Japan | Retrospective cohort | 2250 | 48 | 4 |
Beisland et al. [23]* | Norway | Retrospective cohort | 1425 | 53 | 2 |
Sato et al.. [24]* | Japan | Retrospective cross-sectional | 319 | 29 | 4 |