;field_name;field_type;field_label_en;choices_en;field_note;text_validation_type_or_show_slider_number;text_validation_min;text_validation_max;identifier;branching_logic;required_field;field_annotation 1;did;text;Data ID;NA;NA;NA;NA;NA;y;NA;NA;NA 2;age;text;Age at sampling (for random sample) / Age at study visit (for others);NA;NA;NA;NA;NA;y;NA;NA;NA 3;gender;radio;Sex;1, Male | 2, Female;NA;NA;NA;NA;y;NA;NA;NA 4;fso_strate;text;Random sample participants' strata, as per the Federal Office of Statistics (FSO) draw;NA;NA;NA;NA;NA;NA;NA;NA;NA 5;center;radio;Study center allocated to participant;0, Bern | 1, Lausanne;NA;NA;NA;NA;NA;NA;NA;NA 6;population;text;Population type;R, Random Sample (Vaud and Bern) | C, Convenience sample (vegetarian/vegan diet) from Vaud canton Selenium sub-study | S, Self-selected participants from all Switzerland | W, Wave 0 - random sample (Vaud and Bern);NA;NA;NA;NA;NA;NA;NA;NA 7;population_nbr;int;Population type in number format;1, Random Sample (Vaud and Bern) = R | 2, Convenience sample (vegetarian/vegan diet) from Vaud canton Selenium sub-study = C | 3, Self-selected participants from all Switzerland = S | 4, Wave 0 - random sample (Vaud and Bern) = W;NA;NA;NA;NA;NA;NA;NA;NA