A H Balen

No ORCID on file · 3 papers in corpus
observational 2026
A comparison of progesterone via vaginal oil capsules versus pessaries for luteal phase support in assisted reproduction treatment: a multicentre cohort study of 42 291 cycles
Human reproduction (Oxford, England) ·doi:10.1093/humrep/deaf219

STUDY QUESTION: What is the effect of progesterone administered via vaginal oil capsules versus pessaries, on clinical outcomes, when used for luteal phase support (LPS) in ART? SUMMARY ANSWER: Our study findings indicate a higher live bir…

qualitative 2021
COVID-19 and fertility services in the United Kingdom: a biphasic qualitative study
Reproduction & fertility ·doi:10.1530/raf-20-0055

UNLABELLED: Recently, fertility services have started resuming since COVID-19 was declared a pandemic, but there remains significant uncertainty in the way this care will be delivered in the United Kingdom. The objective of our study was to…

other 2013
Amino acid turnover by human oocytes is influenced by gamete developmental competence, patient characteristics and gonadotrophin treatment
Human reproduction (Oxford, England) ·doi:10.1093/humrep/des458

STUDY QUESTION: Can amino acid profiling differentiate between human oocytes with differing competence to mature to metaphase II (MII) in vitro? SUMMARY ANSWER: Oocytes which remained arrested at the germinal vesicle (GV) stage after 24 h …