Schmulson , Drossman D
Tanaka Y, Kanazawa M, Fukudo S, Drossman D
Tanaka Y, Kanazawa M, Palsson OS, Van Tilburg MA, Gangarosa , Fukudo S, Drossman D, Whitehead
Wood JD, Liu S, Drossman D, Ringel Y, Whitehead
Kanazawa M, Nakajima S, Oshima T, Whitehead , Sperber AD, Palsson OS, Drossman D, Miwa H, Fukudo S