Grasselli G, Pesenti A, Cecconi M. Critical care utilization for the COVID-19 outbreak in Lombardy, Italy: early experience and forecast during an emergency response. JAMA. 2020;323:1545–6.
Gandhi RT, Lynch JB, Del Rio C. Mild or moderate Covid-19. N Engl J Med. 2020;383:1757–66.
Grasselli G, Zangrillo A, Zanella A, Antonelli M, Cabrini L, Castelli A, Cereda D, Coluccello A, Foti G, Fumagalli R, Iotti G, Latronico N, Lorini L, Merler S, Natalini G, Piatti A, Ranieri MV, Scandroglio AM, Storti E, Cecconi M, Pesenti A. COVID-19 Lombardy ICU network, baseline characteristics and outcomes of 1591 patients Infected with SARS-CoV-2 admitted to ICUs of the Lombardy Region Italy. JAMA. 2020;323:1574–81.
Guan WJ, Ni ZY, Hu Y, Liang WH, Ou CQ, He JX, Liu L, Shan H, Lei CL, Hui DSC, Du B, Li LJ, Zeng G, Yuen KY, Chen RC, Tang CL, Wang T, Chen PY, Xiang J, Li SY, Wang JL, Liang ZJ, Peng YX, Wei L, Liu Y, Hu YH, Peng P, Wang JM, Liu JY, Chen Z, Li G, Zheng ZJ, Qiu SQ, Luo J, Ye CJ, Zhu SY, Zhong NS, China Medical Treatment Expert Group for Covid-19. Clinical Characteristics of Coronavirus Disease 2019 in China. N Engl J Med. 2020;382:1708–20.
Chen L Li Q Zheng D Jiang H Wei Y Zou L Feng L Xiong G Sun G Wang H Zhao Y Qiao J Clinical characteristics of pregnant women with Covid-19 in Wuhan, China N Engl J Med 2020; 382:e100
Crovetto F, Crispi F, Llurba E, Figueras F, Gómez-Roig MD, Gratacós E. Seroprevalence and presentation of SARS-CoV-2 in pregnancy. Lancet. 2020;396:530–1.
Khalil A, Kalafat E, Benlioglu C, O'Brien P, Morris E, Draycott T, Thangaratinam S, Le Doare K, Heath P, Ladhani S, von Dadelszen P, Magee LA. SARS-CoV-2 infection in pregnancy: a systematic review and meta-analysis of clinical features and pregnancy outcomes. EClinicalMedicine. 2020;25:100446.
Figueiro-Filho EA, Yudin M, Farine D. COVID-19 during pregnancy: an overview of maternal characteristics, clinical symptoms, maternal and neonatal outcomes of 10,996 cases described in 15 countries. J Perinat Med. 2020;48:900–11.
Chi J, Gong W, Gao Q. Clinical characteristics and outcomes of pregnant women with COVID-19 and the risk of vertical transmission: a systematic review. Arch Gynecol Obstet. 2020 :1–9. Epub ahead of print.
Knight M, Bunch K, Vousden N, Morris E, Simpson N, Gale C, O'Brien P, Quigley M, Brocklehurst P, Kurinczuk JJ; UK Obstetric Surveillance System SARS-CoV-2 Infection in Pregnancy Collaborative Group. Characteristics and outcomes of pregnant women admitted to hospital with confirmed SARS-CoV-2 infection in UK: national population based cohort study. BMJ. 2020;369:m2107.
Ahlberg M, Neovius M, Saltvedt S, Söderling J, Pettersson K, Brandkvist C, Stephansson O. Association of SARS-CoV-2 test status and pregnancy outcomes. JAMA. 2020;324(17):1782–5.
Sutton D, Fuchs K, D’Alton M, Goffman D. Universal screening for SARS-CoV-2 in women admitted for delivery. N Engl J Med. 2020;382(22):2163–4.
Crovetto F, Crispi F, Llurba E, Pascal R, Larroya M, Trilla C, Camacho M, Medina C, Dobaño C, Gomez-Roig MD, Figueras F, Gratacos E. KidsCorona Pregnancy COVID-19 group. Impact of SARS-CoV-2 infection on pregnancy outcomes: a population-based study. Clin Infect Dis. 2021. [Epub ahead of print].
French MA, Moodley Y. The role of SARS-CoV-2 antibodies in COVID-19: healing in most, harm at times. Respirology. 2020;25:680–2.
Benaglia L, Candotti G, Papaleo E, Pagliardini L, Leonardi M, Reschini M, Quaranta L, Munaretto M, Viganò P, Candiani M, Vercellini P, Somigliana E. Pregnancy outcome in women with endometriosis achieving pregnancy with IVF. Hum Reprod. 2016;31(12):2730–6.
Parazzini F, Cortinovis I, Bortolus R, Fedele L. Standards of birth weight in Italy. Ann Ostet Ginecol Med Perinat. 1991;112:203–46.
Tassis B, Lunghi G, Frattaruolo MP, Ruggiero M, Somigliana E, Ferrazzi E. Effectiveness of a COVID-19 screening questionnaire for pregnant women at admission to an obstetric unit in Milan. Int J Gynaecol Obstet. 2020;150:124–6.
Valenti L, Bergna A, Pelusi S, Facciotti F, Lai A, Tarkowski M, Lombardi A, Berzuini A, Caprioli F, Santoro L, Baselli G, Ventura CD, Erba E, Bosari S, Galli M, Zehender G, Prati D. Covid-19 Donors Study (CoDS) network (Appendix 1). SARS-CoV-2 seroprevalence trends in healthy blood donors during the COVID-19 outbreak in Milan. Blood Transfus. 2021;19(3):181–9.
Wang W, Xu Y, Gao R, Lu R, Han K, Wu G, Tan W. Detection of SARS-CoV-2 in different types of clinical specimens. JAMA. 2020;323:1843–4.
Mallapaty S. Will antibody tests for the coronavirus really change everything? Nature. 2020;580:571–2.
Sethuraman N, Jeremiah SS, Ryo A. Interpreting diagnostic tests for SARS-CoV-2. JAMA. 2020;323:2249–51.