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Table 6 The categories of research hotspots in 100 most cited articles in ectopic pregnancy

From: The 100 most cited articles in ectopic pregnancy: a bibliometric analysis

Rank Key word Frequency
1 Ectopic pregnancy 79
2 Treatment 26
3 Risk factors 17
4 Methotrexate 16
5 Diagnosis 15
6 Tubal pregnancy 14
7 Chlamydia trachomatis infections 13
8 HCG (Human Chorionic-Gonadotropin) 12
9 Pelvic inflammatory disease 12
10 Ultrasound 11