lower back pain (22%, 0.20)
The ITC evaluation study in Canada found that because plain packaging was not accompanied by new, revised warnings, plain packaging in Canada did not lead to increased warning effectiveness, in contrast to plain packaging in other ITC countriesAustralia, New Zealand, and Englandwhere it did lead to increased effectiveness of new, revised warnings
Japanese.donga.com
This is not my area of specialty but I am guessing the age to be about 1925 to 1945 range.
However, simultaneous global monitoring is also feasible and should prioritize long-term, geographically comprehensive settings, which are essential for identifying temporal patterns, evaluating policy impacts, and tracking the effectiveness of mitigation strategies [107]