On-demand mobile hypertension training for primary health care workers in Nigeria: a pilot study oleh Joseph Odu, Kufor Osi, Leander Nguyen, Allison Goldstein, Lawrence J. Appel, Kunihiro Matsushita, Dike Ojji, Ikechukwu A. Orji, Morenike Alex-Okoh, Deborah Odoh, Malau Mangai Toma, Chris Ononiwu Elemuwa, Suleiman Lamorde, Hasana Baraya, Mary T. Dewan, Obagha Chijioke, Andrew E. Moran, Emmanuel Agogo, Marshall P. Thomas