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Engelsman E, Persijn JP, Korsten CB, Cleton FJ.Engelsman E, et al. Among authors: persijn jp.Br Med J. 1973 Jun 30;2(5869):750-2. doi: 10.1136/bmj.2.5869.750.Br Med J. 1973.PMID: 4352316Free PMC article.
Persijn JP, Korsten CB, Engelsman E.Persijn JP, et al.Br Med J. 1975 Nov 29;4(5995):503. doi: 10.1136/bmj.4.5995.503.Br Med J. 1975.PMID: 172189Free PMC article.No abstract available.