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Copulation

Sexual behaviour among women using intramuscular depot medroxyprogesterone acetate, a copper intrauterine device, or a levonorgestrel implant for contraception: Data from the ECHO randomized trial

G. Justus Hofmeyr, Mandisa Singata-Madliki, Joanne Batting, Petrus Steyn, Katherine K. Thomas, Rodal Issema, Ivana Beesham, Enough Mbatsane, Charles Morrison, Jen Deese, Jenni Smit, Neena Philip, Thesla Palanee-Phillips, Krishnaveni Reddy, Maricianah Onono, Timothy D. Mastro, Jared M. Baeten, on behalf of Evidence for Contraceptive Options and HIV Outcomes (ECHO) Trial Consortium

published 09 May 2024

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Prevalence of sexually risky behaviors among Mexican medical students

Gina Stella Garcia-Romo, Glustein Pozo-Molina, Julia Reyes-Reali, Claudia Fabiola Mendez-Catala, Efrain Garrido, Adolfo Rene Mendez-Cruz, Patricia Alanis-Lopez, Maria Isabel Mendoza-Ramos, Oscar Nieto‐Yañez, Nelly Rivera-Yañez, Alexander Pedroza-Gonzalez

published 06 May 2024

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Intra-horn insemination in the alpaca Vicugna pacos: Copulatory wounding and deep sperm deposition

Patricia L. R. Brennan, Stephen Purdy, Sarah J. Bacon

published 17 Apr 2024

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Patterns of sex behaviors and factors associated with condomless anal intercourse during the COVID-19 pandemic among men who have sex with men in Hong Kong: A cross-sectional study

Phoenix K. H. Mo, Meiqi Xin, Zixin Wang, Joseph T. F. Lau, Xinchen Ye, Kam Hei Hui, Fuk Yuen Yu, Ho Hin Lee

published 04 Apr 2024

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A spider mating plug functions to protect sperm

He Jiang, Yongjia Zhan, Qingqing Wu, Huitao Zhang, Matjaž Kuntner, Lihong Tu

published 29 Mar 2024

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Factors associated with hepatitis A susceptibility among men who have sex with men using HIV pre-exposure prophylaxis in Northeastern Brazil: A cross-sectional study

Hareton Teixeira Vechi, Mônica Baumgardt Bay, Cláudio Henrique Silva de Freitas, Júlia Gomes Fernandes Costa de Sant’anna, Carlos Brites, Kenio Costa de Lima

published 28 Mar 2024

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Effects of injectable contraception with depot medroxyprogesterone acetate or norethisterone enanthate on estradiol levels and menstrual, psychological and behavioral measures relevant to HIV risk: The WHICH randomized trial

Mandisa Singata-Madliki, Jenni Smit, Mags Beksinska, Yusentha Balakrishna, Chanel Avenant, Ivana Beesham, Ishen Seocharan, Joanne Batting, Janet P. Hapgood, G. Justus Hofmeyr

published 26 Mar 2024

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Mating dynamics of a sperm-limited drosophilid, Zaprionus indianus

Jennifer M. Gleason, Barnabas Danborno, Marena Nigro, Henry Escobar, Micalea J. Cobbs

published 25 Mar 2024

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Comparative exploration of mammalian deafness gene homologues in the Drosophila auditory organ shows genetic correlation between insect and vertebrate hearing

Daniel C. Sutton, Jonathan C. Andrews, Dylan M. Dolezal, Ye Jin Park, Hongjie Li, Daniel F. Eberl, Shinya Yamamoto, Andrew K. Groves

published 27 Feb 2024

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Sexual activity in a large representative cohort of Polish men: Frequency, number of partners, correlates, and quality of life

Mikolaj Przydacz, Marcin Chlosta, Adrian Andrzej Chrobak, Pawel Rajwa, Przemyslaw Dudek, Tomasz Wiatr, Katarzyna Gronostaj, Anna Katarzyna Czech, Marcin Miszczyk, Michal Skalski, Dominika Dudek, Piotr Chlosta

published 19 Jan 2024

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Prevalence and factors associated with early resumption of sexual intercourse among postpartum women: Systematic review and meta-analysis

Kelemu Abebe Gelaw, Yibeletal Assefa Atalay, Adisu Yeshambel, Getachew Asmare Adella, Belete Gelaw Walle, Liknaw Bewket Zeleke, Natnael Atnafu Gebeyehu

published 17 Jan 2024

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Callosobruchus maculatus males and females respond differently to grandparental effects

Azam Amiri, Ali R. Bandani

published 22 Dec 2023

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Contraceptive use by number of living children in Ghana: Evidence from the 2017 maternal health survey

Sarah Compton, Emmanuel Nakua, Cheryl Moyer, Veronica Dzomeku, Emily Treleaven, Easmon Otupiri, Jody Lori

published 14 Dec 2023

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