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Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1946 1
1947 1
1974 2
1975 6
1976 1
1978 4
1979 2
1980 8
1981 12
1982 4
1983 8
1984 7
1985 11
1986 13
1987 4
1988 10
1989 8
1990 15
1991 17
1992 24
1993 10
1994 10
1995 9
1996 12
1997 9
1998 5
1999 9
2000 7
2001 2
2002 6
2003 2
2004 2
2005 4
2006 1
2007 3
2008 3
2009 3
2010 5
2011 2
2012 6
2013 8
2014 4
2015 3
2017 4
2018 8
2019 15
2020 21
2021 12
2022 14
2023 7
2024 0

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Similar articles for PMID: 1486777

351 results

Results by year

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Page 1
A multicenter study of levonorgestrel-estradiol contraceptive vaginal rings. III-Menstrual patterns. An international comparative trial.
Sivin I, Mishell DR Jr, Victor A, Diaz S, Alvarez-Sanchez F, Nielsen NC, Akinla O, Pyorala T, Coutinho E, Faundes A, Roy S, Brenner PF, Ahren T, Pavez M, Brache V, Giwa-Osagie OF, Fasan MO, Zausner-Guelman B, Darze E, Gama daSilva JC, Diaz J, Jackanicz TM, Stern J, Nash HA. Sivin I, et al. Contraception. 1981 Oct;24(4):377-92. doi: 10.1016/0010-7824(81)90005-6. Contraception. 1981. PMID: 6797783
351 results