NEW YORK — A physical therapist who popularized the Lamaze method of childbirth in the U.S. and helped change the way women and doctors approached the delivery room has died at her New York home. Elisabeth Bing was 100.

Bing became interested in childbirth techniques in the 1950s. At the time, laboring women were often heavily medicated and fathers generally were nowhere near delivery rooms.

Bing and the late Marjorie Karmel helped change all that, drawing on methods Dr. Fernand Lamaze had spread in France.