Pinheiro, Rosa Lomelino, Ana Luísa Areia, Anabela Mota Pinto, and Helena Donato. 2019. “Advanced Maternal Age: Adverse Outcomes of Pregnancy, A Meta-Analysis”. Acta Médica Portuguesa 32 (3). Lisbon, Portugal:219-26. https://doi.org/10.20344/amp.11057.