{{Cite journal| doi = 10.1136/bmjgh-2021-005516| issn = 2059-7908| volume = 6| issue = 8| pages = –005516| last1 = Chao| first1 = Fengqing| last2 = Gerland| first2 = Patrick| last3 = Cook| first3 = Alex Richard| last4 = Guilmoto| first4 = Christophe Z| last5 = Alkema| first5 = Leontine| title = Projecting sex imbalances at birth at global, regional and national levels from 2021 to 2100: scenario-based Bayesian probabilistic projections of the sex ratio at birth and missing female births based on 3.26 billion birth records| journal = BMJ Global Health| access-date = 2021-09-28| date = 2021-08| url = https://gh.bmj.com/lookup/doi/10.1136/bmjgh-2021-005516}}