Acknowledgements
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We thank the Jordi Gol Research Institute in Primary Care (Institut d’Investigació en Atenció Primària; IDIAP) for their guidance regarding ethical matters. We thank to the entities and participants in the ECLIPSES study: Research Group in Nutrition and Mental Health (NUTRISAM), Universitat Rovira i Virgili (URV), Reus, Spain (Victoria Arija, Josefa Canals, Lucía Iglesias-Vázquez, Cristina Bedmar, Cristina Jardí, Núria Voltas, Carmen Hernández-Martínez); Meiji Pharma Spain S.A. — formerly Tedec-Meiji Farma S.A — (Pilar Coronel and Mercedes Gimeno) for logistic assistance and for providing free iron supplements. Sexual and Reproductive Health Care Services (ASSIR) of Tarragona, Spain (Francesc Fargas, Francisca Ruiz, Gemma March, Susana Abajo); the team of midwives recruited for the study (Irene Aguilar, Sònia Aguiles, Rosa Alzúria, Judit Bertrán, Carmen Burgos, Elisabet Bru, Montserrat Carreras, Beatriz Fernández, Carme Fonollosa, María Leiva, Demetria Patricio, Teresa Pinto, María Ramírez, Eusebia Romano, Inés Sombreo); the Research support Unit-Tarragona (Josep Basora, Meritxell Pallejà) and the Central Unit-Barcelona (Rosa Morros) of the Institut d’Atenció Primària IDIAP Jordi Gol, Institut Català de la Salut; and the Laboratory of Institut Català de la Salut (ICS), University Hospital of Tarragona Joan XXIII, Tarragona, Spain (Núria Serrat).