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Kabahuma RI, Ouyang X, Du LL, Yan D, Hutchin T, Ramsay M, Penn C, Liu XZ.Kabahuma RI, et al. Among authors: penn c.Int J Pediatr Otorhinolaryngol. 2011 May;75(5):611-7. doi: 10.1016/j.ijporl.2011.01.029. Epub 2011 Mar 9.Int J Pediatr Otorhinolaryngol. 2011.PMID: 21392827Free PMC article.
Smollan T, Penn C.Smollan T, et al. Among authors: penn c.Disabil Rehabil. 1997 Feb;19(2):56-63. doi: 10.3109/09638289709166828.Disabil Rehabil. 1997.PMID: 9058030
Penn C, Koole T, Nattrass R.Penn C, et al.J Health Psychol. 2017 Sep;22(10):1256-1264. doi: 10.1177/1359105315625357. Epub 2016 Feb 9.J Health Psychol. 2017.PMID: 26865540
Hay N, Penn C.Hay N, et al. Among authors: penn c.Int J Lang Commun Disord. 2011 Sep-Oct;46(5):550-63. doi: 10.1111/j.1460-6984.2011.00010.x. Epub 2011 Mar 7.Int J Lang Commun Disord. 2011.PMID: 21899672
Watermeyer J, Penn C.Watermeyer J, et al. Among authors: penn c.Health Commun. 2012;27(6):602-11. doi: 10.1080/10410236.2011.618436. Epub 2011 Dec 14.Health Commun. 2012.PMID: 22168431