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Teixeira RF, Costa CM, Maria de Abreu C, Lessa CA, Carvalho AC, Kassar SB, Barreto ID, Gurgel RQ, Medeiros AM.Teixeira RF, et al. Among authors: kassar sb.J Perinat Med. 2020 Dec 18;49(4):506-513. doi: 10.1515/jpm-2020-0313. Print 2021 May 26.J Perinat Med. 2020.PMID: 33470964
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de Lima THB, Katz L, Kassar SB, Amorim MM.de Lima THB, et al. Among authors: kassar sb.BMC Pregnancy Childbirth. 2018 Oct 12;18(1):401. doi: 10.1186/s12884-018-2020-x.BMC Pregnancy Childbirth. 2018.PMID: 30314456Free PMC article.