The solution to this problem lies not in legislation but in effective screening of potential surrogate mothers.

He noted that little is known about effective screening for certain sub-populations, so screening research still has its place.

These studies suggest an increased need for effective screening.

The lack of standards is cited as a major deterrent to effective screening.

Attempts at devising effective screening has so far failed to improve survival rates.

"Implementing an effective screening policy"

A big study is going on in New York City to see how effective such screening is.

This 18-year history largely results from the effective screening of applicants.

Promote the use of consistent and effective screening, tracking and monitoring practices.

This is felt to give improved flexibility but less effective screening.