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Lamberts H, Hofmans-Okkes IM.Lamberts H, et al.Scand J Prim Health Care Suppl. 1993;2:16-9. doi: 10.3109/02813439309045491.Scand J Prim Health Care Suppl. 1993.PMID: 8146464No abstract available.
Hofmans-Okkes IM, Lamberts H.Hofmans-Okkes IM, et al.Scand J Prim Health Care Suppl. 1993;2:42-8.Scand J Prim Health Care Suppl. 1993.PMID: 8146471No abstract available.