1. Missing data, Part 1. Why missing data are a problem;Pham;Am J Orthod Dentofac Orthop,2022
2. Missing data, Part 2. Missing data mechanisms: MCAR, MAR, MNAR, and why they matter;Pham;Am J Orthod Dentofac Orthop,2022
3. Missing data, Part 3. How to explore missing data;Pham;Am J Orthod Dentofac Orthop,2022
4. Missing data, Part 4. Missing data in the outcomes versus in the covariates;Pham;Am J Orthod Dentofac Orthop,2022
5. Gingival recession in orthodontic patients 10 to 15 years posttreatment: A retrospective cohort study;Gebistorf;Am J Orthod Dentofacial Orthop,2018