Chawanpaiboon, S.; Wanitpongpan, P.; Titapant, V.; Kanokpongsakdi, S.; Wantanasiri, C.; Pimol, K.; Sirisomboon, R. Nifedipine for Inhibiting Threatened Preterm Labour in Siriraj Hospital. Siriraj Med J 2008, 60, 111-113.