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Griffiths N, Spence K, Loughran-Fowlds A, Westrup B.Griffiths N, et al. Among authors: westrup b.Early Hum Dev. 2019 Dec;139:104840. doi: 10.1016/j.earlhumdev.2019.104840. Epub 2019 Aug 21.Early Hum Dev. 2019.PMID: 31445697
Mörelius E, Broström EB, Westrup B, Sarman I, Örtenstrand A.Mörelius E, et al. Among authors: westrup b.Early Hum Dev. 2012 Jul;88(7):575-81. doi: 10.1016/j.earlhumdev.2011.12.033. Epub 2012 Jan 28.Early Hum Dev. 2012.PMID: 22284983