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Gamel C, Grypdonck M, Hengeveld M, Davis B.Gamel C, et al. Among authors: hengeveld m.J Adv Nurs. 2001 Mar;33(6):806-19. doi: 10.1046/j.1365-2648.2001.01724.x.J Adv Nurs. 2001.PMID: 11298219
Speckens AE, Hengeveld MW, Lycklama à Nijeholt G, van Hemert AM, Hawton KE.Speckens AE, et al. Among authors: hengeveld mw.Arch Sex Behav. 1995 Apr;24(2):157-72. doi: 10.1007/BF01541579.Arch Sex Behav. 1995.PMID: 7794106