Retraction notices

Extended letrozole therapy for ovulation induction in clomiphene-resistant women with polycystic ovary syndrome: a novel protocol

Type

Expression of concern

Notice date

9/8/2020 0:00

Journal

Fertility and Sterility

Publisher

Elsevier

Notice DOI

10.1016/j.fertnstert.2020.07.035

Original paper DOI

10.1016/j.fertnstert.2008.04.065

Reasons

• Concerns/Issues about Data
• Duplication of Data
• Investigation by Company/Institution
• Investigation by Journal/Publisher
• Updated to Retraction

Matching venue names

Name match only, not an authoritative journal identifier.

• Fertility and Sterility