More than 2 million cribs from seven companies were recalled Thursday because concerns that babies can suffocate, become trapped or fall from the cribs.

Most of the cribs were drop-sides, which have a side rail that moves up and down so parents can lift children from them more easily. That movable side, however, can malfunction or detach from the crib, creating a dangerous gap where babies' heads can become trapped, leading to suffocation or strangulation.

The companies involved in the recall were Evenflo, Delta Enterprises Corp., Child Craft, Jardine Enterprises, LaJobi, Million Dollar Baby and Simmons Juvenile Products Inc.

No deaths were associated with the cribs, but there were reports of at least 16 entrapments of infants. In one case, a child was found unconscious and later hospitalized.

In the announcement from the Consumer Product Safety Commission, all seven companies recalled drop-side cribs. Delta and Child Craft also acknowledged problems with fixed-side cribs.

Drop-sides have increasingly come under scrutiny, with several warnings from the CPSC in the last year that the cribs can be deadly. CPSC Chairman Inez Tenenbaum has pledged to ban their manufacture and sale by year's end.

Read more at cbs4denver.com.