Doula refers to a supportive companion (other than a friend or loved one) who is professionally trained to provide labor support. She performs no clinical tasks. Doula also refers to lay women who are trained or experienced in providing postpartum care - mother and newborn care, breastfeeding support and advice, cooking, child care, errands, and light cleaning - for the family. To distinguish between the two types of doulas, one may refer to "birth doulas" and " postpartum doulas."

A doula provides:
physical, emotional, and informational support to women and their partners during labor and birth; help and advice on comfort measures such as breathing, relaxation, massage and positioning; assistance to families in gathering information about the course of their labor and their options; continuous emotional reassurance and comfort; non-medical skills such as massage and other non-pharmacological pain relief measures; assistance to partners who want to play an active support role; help so the woman has a safe and satisfying childbirth as the woman defines it.

Medical technologists perform complex chemical, biological, hematological, immunologic, microscopic, and bacteriological laboratory tests on body fluids and cells.

Medical technologists are also referred to as clinical laboratory technologists, clinical laboratory technicians, clinical laboratory scientists, medical technicians, biomedical technicians, and medical laboratory technicians.

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A midwife is a person who, having been regularly admitted to a midwifery education programme, duly recognised in the country in which it is located, has successfully completed the prescribed course of studies in midwifery and has acquired the requisite qualifications to be registered and/or legally licensed to practise midwifery.

She must be able to give the necessary supervision, care and advice to women during pregnancy, labour and the postpartum period, to conduct deliveries on her own responsibility and to care for the newborn and the infant. This care includes preventative measures, the detection of abnormal conditions in mother and child, the procurement of medical assistance and the execution of emergency measures in the absence of medical help. She has an important task in health counselling and education, not only for the women, but also within the family and the community. The work work should involve antenatal education and preparation for parenthood and extends to certain areas of gynaecology, family planning and child care. She may practise in hospitals, clinics, health units, domiciliary conditions or in any other service.