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van Emmerik RE, den Brinker BP, Vereijken B, Whiting HT.van Emmerik RE, et al. Among authors: whiting ht.Q J Exp Psychol A. 1989 May;41(2):251-62. doi: 10.1080/14640748908402364.Q J Exp Psychol A. 1989.PMID: 2748931Clinical Trial.