Understanding Diagnostic Tests in the Childbearing Year. This book explains diagnostic tests for the practicing midwife. It is also used by parents to better understand the care they are receiving and to make informed choices about which tests they do and do not want. It is recommended by numerous midwifery programs for student midwives and used by practicing midwives as well as doulas, childbirth educators, doctors and other practitioners with a specialty in maternity care throughout the English-speaking world.