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Background: Alcohol and other drugs use is a problem among adolescents leading to numerous physical, social, and educational damages.
CONTEXT: Although pregnancy ambivalence is consistently associated with poorer contraceptive use, little is known about the sexual, social and emotional dynamics at work in pregnancy ambivalence. ...
CONTEXT: Men have been neglected as a target population for sexual and reproductive health services. As a result, little is known about the rates and antecedents of men’s service utilization. METH...
CONTEXT: The development of UK national targets to reduce the transmission of HIV and other STDs has focused health promotion efforts on advocating the use of condoms during penetrative vaginal and an...
CONTEXT: Despite the growing body of knowledge about teenager's sexual and contraceptive behavior in the United Kingdom, much quantitative work has failed to consider the broader social contexts in wh...
Context: Adolescent pregnancy, birth, abortion and sexually transmitted disease (STD) rates are much higher in the United States than in most other developed countries. Methods: Government statist...
Context: Although alcohol and drug use by young people has been associated with sexual risk behavior in some research, detailed data are lacking on the timing of substance use in relationship to sexua...
Context: While a number of studies have examined the association between individuals' characteristics and their contraceptive use, few studies have examined the influence of partners' characteristics ...
Context: U.S. women receive contraceptive and reproductive health services from a wide range of publicly funded and private providers. Information on trends in and on patterns of service use can hel...
Context: Whereas the female condom has been evaluated in many hypothetical acceptability or short-term use studies, there is little information about its suitability for the prevention of sexually tra...
Context: How much condom use among U.S. adults varies by type of partner or by risk behavior is unclear. Knowledge of such differentials would aid in evaluating the progress being made toward goals fo...
The effectiveness of intratesticularly injected bacille Calmette Guérin (BCG) as an antispermatogenic agent was examined by light microscopy in rats after three, six, ten, twenty, and 56 days and in...
The influences of follicle-stimulating hormone (FSH), gonadal steroids, and culture time were studied in relation to inhibin B production by Sertoli cells of immature rats cultured in vitro. Serto...
The relationship of most sperm laboratory assays to male fertility is inconsistent. Assays that measure traits required to fertilize oocytes are expected to have the most predictive value. A new ass...
The mean mature spermatid count (MMSC) provides a useful, simplified quantitative evaluation of human spermatogenesis that is based on the number of mature spermatids in histological sections of t...

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