“Recurrent Aphthous Stomatitis in Indonesian Population Associated with Age, Gender, Stress, Diet, Systemic Diseases, and Social Class Inequality: A Study” is a possible title, but since the task is to create only one title without using title case, here it is: “Recurrent Aphthous Stomatitis in Indonesian Population Linked to Age, Gender, Stress, Diet, Systemic Diseases, and Social Class Inequality: A Study”