The study design and methodology for the ARCHER study - adolescent rural cohort study of hormones, health, education, environments and relationships oleh Steinbeck Katharine, Hazell Philip, Cumming Robert G, Skinner S, Ivers Rebecca, Booy Robert, Fulcher Greg, Handelsman David J, Martin Andrew J, Morgan Geoff, Starling Jean, Bauman Adrian, Rawsthorne Margot L, Bennett David L, Chow Chin, Lam Mary K, Kelly Patrick, Brown Ngiare J, Paxton Karen, Hawke Catherine