by Mastroiacovo, Pierpaolo, Pontes Cavalcanti, Denise, Monni, Giovanni, Maria Ibba, Rosa, Lai, Rosalba, Olla, Giovanni, Cao, Antonio, Hsieh, Fon-Jou, Chen, Dar, Tseng, Li-Hui, Lee, Chien-Nan, Ko, Tsang-Ming, Chuang, Sou-Ming, Chen, Hsi-Yao, Shepard, ThomasH, Kapur, RajP, Fantel, AlanG
Published in The Lancet (British edition) (04.05.1991)