TY  - GEN
AU  - Nuttal,I D
AU  - Elstein,M
AU  - Spencer,B E
TI  - Progestagen-releasing vaginal rings--an update
SN  - 0019-0357
PY  - 1985///0807
KW  - Biology
KW  - Contraception
KW  - Contraceptive Agents
KW  - Contraceptive Agents, Female
KW  - Contraceptive Devices, Female
KW  - Economics
KW  - Endocrine System
KW  - Family Planning Services
KW  - Hormones
KW  - Levonorgestrel
KW  - Physiology
KW  - Reproductive Control Agents
KW  - Research
KW  - Technology
N1  - Publication Type: Journal Article
ER  -