ART	Assisted Reproductive Technology
BM	Basement membranes
EF	Early follicular
EGF	Epidermal growth factors
EIM	European IVF-monitoring
EL	Early luteal
ER	Endometrial Receptivity
ESHRE	European Society of Human Reproduction and Embryology
FET	Frozen Embryo Transfer
GABA	Gamma-aminobutyric acid
GMP	Good Medical Practice
HRT	Hormone replacement therapy
LBR	Live birth rates
LF	Late follicular
LIF	Leukemia inhibitory factor
LL	Late luteal
LP	Luteal phase
LPS	Luteal phase support
OHSS	Ovarian hyperstimulation syndrome
PO	Peri-ovulatory
PR	Progesterone receptor
RIF	Recurrent implantation failure
US	Ultrasound
WOI	Window of Implantation