![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | pills, 60, 130, 181, 184, 189, 199
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Birth process (parturition), 308-10
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | cesarean section, 85
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | stress hormone levels in (mother and baby), 317
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | See also Pregnancy
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Björk, 360
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Björkqvist, Kaj, 264, 268
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Blood clotting factors, 189
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Bloodletting, 97
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Blount, Roy, Jr., 101
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Blumenbach, Johann, 62
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Blumstein, Philip, 330
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Blurton Jones, Nicholas, 352
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