@inbook{1135432535,
author={John Murtagh AM, MBBS, MD, BSc, BEd, FRACGP, DipObstRCOG},
title={Preface},
booktitle={Murtagh’s Practice Tips, 7e},
publisher={McGraw-Hill Education},
address={Sydney, Australia},
year={2016},
url={murtagh.mhmedical.com/content.aspx?aid=1135432535}
}