Concepedia

Effectiveness of Norplant® implants through seven years: A large-scale study in China

Gu Sujuan, Irving Sivin, Ming-kun Du, Linde Zhang, Lirong Ying, Fan Meng, Songling Wu, Peizhu Wang, Yunli Gao, Xin He,

Contraception · 1995 · 54 citations · 7 references

DOI

Concepts

References

7

Health during prolonged use of levonorgestrel 20μg/d and the Copper TCu 380Ag intrauterine contraceptive devices: a multicenter study

Irving Sivin, Janet Stern · Fertility and Sterility · 1994 · 248 citations

, , +16

International Experience with NORPLANT and NORPLANT-2 Contraceptives

Irving Sivin · Studies in Family Planning · 1988 · 237 citations

, , +15

EFFICACY OF DIFFERENT CONTRACEPTIVE METHODS

Martin Vessey, M. Lawless, David Yeates · The Lancet · 1982 · 126 citations

, , +12

The TCu380A, TCu220C, multiload 250 and nova T IUDs at 3, 5 and 7 years of use — Results from three randomized multicentre trials

H World · Contraception · 1990 · 84 citations

, , +6

A 5-year evaluation of NORPLANT contraceptive implants in China.

Gu Sj, Du Mk, Zhang Ld et al. · PubMed · 1994 · 62 citations

, , +17