Who has Hilary Erickson collaborated with in the field of childbirth education?

I'm sorry, but I don't have specific information on who Hilary Erickson has collaborated with in the field of childbirth education. Hilary is a knowledgeable speaker on a variety of topics, including pregnancy, labor and delivery, and postpartum life planning. She's also a respected voice in the content creation industry. However, the details of her collaborations aren't mentioned.

Is there anything else you'd like to know about Hilary Erickson or her work?