High risk for third- and fourth-degree perineal lacerations: Hamilton et al
2011 ◽
Vol 204
(4)
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pp. 366-367
2011 ◽
Vol 204
(4)
◽
pp. e1-e2
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2011 ◽
Vol 204
(4)
◽
pp. 309.e1-309.e6
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2019 ◽
Vol 220
(1)
◽
pp. S411-S412
2012 ◽
Vol 119
(3)
◽
pp. 340-347
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2004 ◽
Vol 10
(1)
◽
pp. 15-17
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1990 ◽
Vol 163
(1)
◽
pp. 100-104
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1960 ◽
Vol 80
(4)
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pp. 711-714
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