A randomized, double-blind, placebo-controlled trial of st john's wort for treating irritable bowel syndrome

1. Saito, Y.A.
2. Rey, E.
3. Almazar-Elder, A.E.
4. Harmsen, W.S.
5. Zinsmeister, A.R.
6. Locke, G.R.
7. Talley, N.J.