The early 1980s .
She has been an internationally - known speaker on maternity care independently and for the Midwives Alliance of North America ( MANA ) , lecturing throughout the world to midwives , physicians , doulas , expectant parents and health policy - makers .
Since the early 1980s , she has been an internationally - known speaker on maternity care independently and for the Midwives Alliance of North America ( MANA ) , lecturing throughout the world to midwives , physicians , doulas , expectant parents and health policy - makers .