Do this portion if the study is an observational study: 1. State the main exposure and response variables. When were they assessed? 2. Describe the data collection process, including exposure and periods of recruitment. 3. What confounders were controlled for by the researchers? Do this portion if the study is an observational study: 1. State the main exposure and response variables. When were they assessed? 2. Describe the data collection process, including exposure and periods of recruitment. 3. What confounders were controlled for by the researchers