Format
The format is:
table [1:5, 1:7] 3 11 31 19 29 2 0 4 6 3 ...
- attr(*, "dimnames")=List of 2
..$ Smoking : chr [1:5] "Nonsmoker" "Moderate smoker" "Medium smoker" "Heavy smoker" ...
..$ Diagnosis: chr [1:7] "Lung cancer" "Lip cancer" "Throat cancer" "Stomach cancer" ...Source
E. Schairer and E. Sch\"oninger (1944), Lungenkrebs und Tabakverbrauch,
Zeitschrift fuer Krebsforschung, 54(4), 261-269