Association of placenta praevia and sex ratio at birth

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Cite this

@article{781d862fd6dd47d7bec6e317fb8677f0,

title = "Association of placenta praevia and sex ratio at birth",

author = "Mills, \{J. L.\} and Graubard, \{B. I.\} and Klebanoff, \{Mark A.\}",

year = "1987",

month = jan,

day = "1",

language = "English",

volume = "294",

journal = "British Medical Journal",

issn = "0959-8146",

number = "6571",

}