Comments on ‘Effectiveness of hormonal intrauterine system in treatment of pelvic congestion syndrome compared to oral progestin’

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References

Abdel Rahim

M Abd El Aal

Fathalla

MMF

, et al. Effectiveness of hormonal intrauterine system in treatment of pelvic congestion syndrome compared to oral progestin. J Endometr Pelvic Pain Disord. Epub ahead of print 11 November 2025. DOI: 10.1177/22840265251387844.

Schulz

Grimes

. Generation of allocation sequences in randomised trials: chance, not choice. Lancet 2002; 359: 515-519.

Concato

Shah

Horwitz

. Randomized, controlled trials, observational studies, and the hierarchy of research designs. N Engl J Med 2000; 342: 1887-1892.

Vickers

Altman

. Statistics notes: analysing controlled trials with baseline and follow up measurements. BMJ 2001; 323: 1123-1124.