CARA ANNA and CLAIRE GALOFARO Associated Press BUSHEKELI, Rwanda (AP) — It was something, the silence. Nothing but the puff of her breath and the scuff of her slip-on shoes as Madeleine Mukantagara walked through the fields to her first patient of the day. Piercing cries once echoed down the hill to the road below. What she carried in her bag had calmed them. For 15 years, her patient Vestine Uwizeyimana had been in unrelenting pain as disease wore away her spine. She could no longer walk and could barely turn over in bed. Her life narrowed to a small, dark room with a dirt-floor in rural Rwanda, prayer beads hanging on the wall by her side. A year ago, relief came in the form of liquid morphine, locally produced as part of Rwanda's groundbreaking effort to address one of the world'