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Roberts SA, Busby PA, Dowell RC, Clark GM, Tong YC, Mecklenburg DJ.Roberts SA, et al. Among authors: dowell rc.Scand Audiol Suppl. 1988;30:115-9.Scand Audiol Suppl. 1988.PMID: 3227253
Clark GM, Dowell RC, Pyman BC, Brown AM, Webb RL, Tong YC, Bailey Q, Seligman PM.Clark GM, et al. Among authors: dowell rc.Aust N Z J Surg. 1984 Dec;54(6):519-26. doi: 10.1111/j.1445-2197.1984.tb05439.x.Aust N Z J Surg. 1984.PMID: 6393936Clinical Trial.