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Author Chantler, E. ♦ Critoph, F. ♦ Elstein, M.
Source British Medical Journal (The BMJ)
Content type Text
Publisher British Medical Journal Publishing Group
File Format HTM / HTML
Language English
Abstract We measured the rate of release from copper-bearing intrauterine contraceptive devices (IUDs) with varying copper surface areas. Over 135 days of observation the release rate decreased exponentially. This decrease in the release rate was associated with the deposition of a protein layer on the surface of the metal. The bioavailability of copper on IUDs was not related to the volume of copper remaining on the device. Consequently any increase in the copper surface area of an IUD is unlikely to affect the duration of its copper-dependent contraceptive action.
Description Citation Reference: British Medical Journal
ISSN 00071447
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Learning Resource Type Article
Publisher Date 1977-07-30
e-ISSN 14685833
Journal British Medical Journal (The BMJ)
Volume Number 2
Issue Number 6082
Page Count 4
Starting Page 288
Ending Page 291

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Source: British Medical Journal (The BMJ)