Smoking trajectories from midlife to old age and the development of non-life-threatening health problems


Paper details 
We will attach a study article, the writer is expected to write a paper that focuses on the research design, sampling, and data collection methods used in this study. Describe the various data collection strategies that are used in the study. Include as much detail as the article provides in terms of the method(s) used, how they were implemented and the specifics of the information gathered.


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