#	Query	Results
S40	S27 AND S39	111
S39	S28 OR S29 OR S30 OR S31 OR S32 OR S33 OR S34 OR S35 OR S36 OR S37 OR S38	1,105,194
S38	TX allocat* random*	5,945
S37	(MH "Quantitative Studies")	15,237
S36	(MH "Placebos")	9,967
S35	TX placebo*	43,010
S34	TX random* allocat*	5,945
S33	(MH "Random Assignment")	42,264
S32	TX randomi* control* trial*	117,316
S31	TX ( (singl* n1 blind*) or (singl* n1 mask*) ) or TX ( (doubl* n1 blind*) or (doubl* n1 mask*) ) or TX ( (tripl* n1 blind*) or (tripl* n1 mask*) ) or TX ( (trebl* n1 blind*) or (trebl* n1 mask*) )	870,796
S30	TX clinic* n1 trial*	197,987
S29	PT Clinical trial	79,975
S28	(MH "Clinical Trials+")	208,852
S27	S18 AND S26	364
S26	S19 OR S20 OR S21 OR S22 OR S23 OR S24 OR S25	30,510
S25	TX Estradiol or TX oestrogen or TX estrogen or TX oestradiol	17,624
S24	TX desogestral or TX desogestrel or TX Gestagen	76
S23	TX Norgestrel or TX Norethindrone TX Norethisterone	19
S22	TX progestagen* or TX progestin* or TX progestogen*	1,722
S21	TX Pretreatment	7,437
S20	TX oral contraceptive*	6,329
S19	(MH "Contraceptives, Oral Combined") OR (MM "Contraceptives, Oral")	3,014
S18	S1 OR S2 OR S3 OR S4 OR S5 OR S6 OR S7 OR S8 OR S9 OR S10 OR S11 OR S12 OR S13 OR S14 OR S15 OR S16 OR S17	7,460
S17	TX (ovari* N2 induction)	15
S16	TX COH	119
S15	TX ovarian hyperstimulation	403
S14	TX superovulat*	24
S13	TX ovulation induc*	660
S12	TX intrauterine insemination	185
S11	TX IUI	117
S10	TX assisted reproduct*	1,678
S9	(MM "Reproduction Techniques+")	4,518
S8	TX intracytoplasmic sperm injection*	308
S7	TX embryo* N3 transfer*	985
S6	TX ovar* N3 hyperstimulat*	406
S5	TX ovari* N3 stimulat*	335
S4	TX IVF or TX ICSI	1,757
S3	(MM "Fertilization in Vitro")	1,659
S2	TX vitro fertilization	3,491
S1	TX vitro fertilisation	3,491