Getting your Trinity Audio player ready... By Pam Belluck The New York Times MIAMI — Time was running out for Amanda Sifford, she and her doctors could tell. ALS, the paralyzing neurological disorder, was stealing her ability to breathe. On a breathing test, her lung function was only at 48% of capacity, a sharp drop from 86% five months earlier. “I couldn’t take 10 steps and be able to breathe,” she said.