How to get struct field names in Rust?

Is there some equivalent of JS's Object.keys() for Rust's struct?

I need something to generate CSV headers (I use rust-csv) from structure field names.

struct Export {
    first_name: String,
    last_name: String,
    gender: String,
    date_of_birth: String,
    address: String
}

//... some code

let mut wrtr = Writer::from_file("/home/me/export.csv").unwrap().delimiter(b'\t');

wrtr.encode(/* WHAT TO WRITE HERE TO GET STRUCT NAMES as tuple of strings or somethings */).is_ok()