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Un texto sobre el rol del padre en el parto, piden lenguaje claro y básico:

Dads in the delivery room
Tips for before labor
Take a childbirth education call ... or two ... or three.
The more you understand about what is happening, the less scary or strange the birth events will seem.
Learn your partner's birth preferences.
Some moms decide to write out a plan and give a copy to caregivers who will be present for the birth.

No entiendo a qué se refiere con call.