Seminal volume and total sperm number trends in men attending subfertility clinics in the greater Athens area during the period 1977-1993, Hum Reprod, vol.11, pp.1936-1941, 1996. ,
High frequency of sub-optimal semen quality in an unselected population of young men, Hum Reprod, vol.15, pp.366-372, 2000. ,
Evolution of semen quality in North-eastern Spain: a study in 22,759 infertile men over a 36 year period, Hum Reprod, vol.14, pp.731-735, 1999. ,
Decline in semen quality among fertile men in Paris during the past 20 years, N Engl J Med, vol.332, pp.281-285, 1995. ,
Identifying environmental risk to male reproductive function by occupational sperm studies: logistics and design options, Occup Environ Med, vol.53, pp.511-519, 1996. ,
Relation between semen quality and fertility: a population-based study of 430 first-pregnancy planners, Lancet, vol.352, pp.1172-1177, 1998. ,
Time series analysis of sperm concentration in fertile men in Toulouse, France between, Bmj, vol.312, pp.471-472, 1977. ,
Evidence for decreasing quality of semen during past 50 years, Bmj, vol.305, pp.609-613, 1992. ,
Epidemiologic studies of human semen quality: considerations for study design, Am J Epidemiol, vol.155, pp.664-671, 2002. ,
Effects of cigarette smoking, caffeine consumption, and alcohol intake on fecundability, Am J Epidemiol, vol.146, pp.32-41, 1997. ,
The association of age and semen quality in healthy men, Hum Reprod, vol.18, pp.447-454, 2003. ,
Semen analyses in 1,283 men from the United States over a 25-year period: no decline in quality, Fertil Steril, vol.65, pp.1009-1014, 1996. ,
Psychological and attitudinal profiles in donors for artificial insemination, Fertil Steril, vol.43, pp.95-101, 1985. ,
Sperm output of healthy men in Australia: magnitude of bias due to self-selected volunteers, Hum Reprod, vol.12, pp.2701-2705, 1997. ,
Effect of male age on fertility: evidence for the decline in male fertility with increasing age, Fertil Steril, vol.79, pp.1520-1527, 2003. ,
East-West gradient in semen quality in the Nordic-Baltic area: a study of men from the general population in Denmark, Hum Reprod, vol.17, pp.2199-2208, 2002. ,
Semen quality and male reproductive health: the controversy about human sperm concentration decline, Apmis, vol.109, pp.333-344, 2001. ,
Retrospectively sampled time-to-pregnancy data may make age-decreasing fecundity look increasing, European Infertility and Subfecundity Study Group. Epidemiology, vol.11, pp.717-719, 2000. ,
Semen quality of male smokers and nonsmokers in infertile couples, Fertil Steril, vol.79, pp.287-291, 2003. ,
Paternal age >or=40 years: an important risk factor for infertility, Am J Obstet Gynecol, vol.189, pp.901-905, 2003. ,
Recruitment and motivation of semen providers in Sweden, Hum Reprod, vol.18, pp.212-216, 2003. ,
Selection bias in occupational sperm studies, Am J Epidemiol, vol.147, pp.681-685, 1998. ,
Higher sperm counts in Southern Sweden compared with Denmark, Hum Reprod, vol.17, pp.2468-2473, 2002. ,
On revealing what we'd rather hide: the problem of describing study participation, Epidemiology, vol.13, p.117, 2002. ,
A discrete survival model with random effects: an application to time to pregnancy, Biometrics, vol.53, pp.318-329, 1997. ,
Time to pregnancy and semen parameters: a crosssectional study among fertile couples from four European cities, Hum Reprod, vol.17, pp.503-515, 2002. ,
Does smoking during pregnancy affect sons' sperm counts?, Epidemiology, vol.14, pp.278-286, 2003. ,
The question of declining sperm density revisited: an analysis of 101 studies published 1934-1996, Environ Health Perspect, vol.108, pp.961-966, 2000. ,
Geographic differences in semen quality of fertile U.S. males, Environ Health Perspect, vol.111, pp.414-420, 2003. ,