An Atherton couple has donated $80 million to Lucile Packard Children’s Hospital Stanford and Stanford University’s School of Medicine to improve the services available to Bay Area mothers and babies.

The gift comes from Elizabeth and Bruce Dunlevie and is the largest ever from individuals to the hospital, the Lucile Packard Foundation for Children's Health announced in a press release earlier this week.

The gift will fund a new labor and delivery unit and further develop Stanford’s Maternal-Fetal Medicine program. More than 4,400 babies are delivered each year at Lucile Packard Children’s Hospital in Palo Alto, hospital officials said.

“Knowing from personal experience how transformative world-class medical treatment can be for mothers and babies, we’re thrilled to help advance the state of the art in medical science for maternal-fetal research, and to give every mother and baby the highest-quality medical care,” Bruce Dunlevie said.