 |
| |||
| coil | |||
| NuvaRing (炔雌醇-依托孕烯 (ethinylestradiol and etonogestrel) 阴道避孕环商品名；避孕药) | |||
| contraceptive fitting ring | |||
|
避孕环 : 4 phrases in 2 subjects |
| Pharmacology | 1 |
| Reproductive biology | 3 |
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