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Dinant GJ, Knottnerus JA, Van Wersch JW.Dinant GJ, et al.J R Coll Gen Pract. 1989 Jul;39(324):302.J R Coll Gen Pract. 1989.PMID: 2556548Free PMC article.No abstract available.
Dinant GJ, Knottnerus JA, van Aubel PG, van Wersch JW.Dinant GJ, et al.Scand J Prim Health Care. 1989 Dec;7(4):231-5. doi: 10.3109/02813438909088670.Scand J Prim Health Care. 1989.PMID: 2626613