The essential reading includes the most relevant guidelines and article from The Obstetrician and Gynaecologist for you to read before you begin working through this tutorial. This literature is recommended, but not compulsory.
Papers listed under further reading (if applicable) are articles relating to the topic, but may not be available as full-text and are for further information only.
Throughout the remainder of the tutorial where the content is referenced, the references will be listed at the bottom of the page. These papers may not be available as full-text and are for further information only, unless otherwise specified.
If we have provided an external link to the abstract of an article, you might be able to access the full-text version using a different institution’s login (for example, your Athens login). Alternatively you could consider purchasing the article.