R
R. Gray
Researcher at World Health Organization
Publications - 6
Citations - 214
R. Gray is an academic researcher from World Health Organization. The author has contributed to research in topics: Ectopic pregnancy & Pregnancy. The author has an hindex of 4, co-authored 6 publications receiving 209 citations.
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Journal ArticleDOI
Multinational comparative clinical trial of long-acting injectable contraceptives: Norethisterone enanthate given in two dosage regimens and depot-medroxyprogesterone acetate. Final report. Who special programme of research, development and research training in human reproduction
H.K. Toppozada,Suporn Koetsawang,V. E. Aimakhu,T. Khan,A. Pretnar-Darovec,T.K. Chatterjee,M. P. Molitor-Peffer,R. Apelo,R. Lichtenberg,P. G. Crosignani,J.C. de Souza,M. Garcia Huidubro,A.A. Haspels,J. Annus,G. Benaginao,P. Diethelm,R. Gray,P.E. Hall,S. Holck +18 more
TL;DR: All three injectable regimens compare favourably with oral contraceptives in terms of pregnancy and total continuation rates observed in clinical trial settings and for family planning programs, NET-EN (60-day) has the advantage of low pregnancy rates compared to NET- EN (84-day), and a schedule of administration that does not change.
Journal ArticleDOI
Effects of hormonal contraceptives on milk volume and infant growth: WHO Special Programme of Research and Development and Research Training in Human Reproduction
Monthira Tankeyoon,N. Dusitsin,Sopon Chalapati,Suporn Koetsawang,S. Saibiang,M. Sas,J.J. Gellen,Olufemi R. Ayeni,R. Gray,A. Pinol,L. Zegers +10 more
TL;DR: In this article, the effects of hormonal contraception on lactation and infant growth were evaluated in a three-centre study in Hungary and Thailand, where women choosing oral contraceptives were randomly assigned to a combined oral contraceptive containing 30 micrograms ethinyl estradiol and 150 microgram of levonorgestrel (N = 86) or a progestin-only preparation containing 75 microgramm dl-norgestrrel (n = 85).
Journal ArticleDOI
Comparative multicentre trial of three IUDs inserted immediately following delivery of the placenta
J. Annus,T. Brat,P. Diethelm,R. Gray,Antônio Carlos Vieira Lopes,John Newton,E. Pizarro,P.J. Rowe,T. Scholz,E. Wilson +9 more
TL;DR: A multinational comparative trial of three IUDs randomly inserted immediately following delivery of the placenta was conducted, particularly for expulsion rates, and significant between-centre differences were observed.
Journal ArticleDOI
Ectopic pregnancy rates in IUD users.
Aznar R,C L Berry,I D Cooke,A Cuadros,R. Gray,G P McNicol,John Newton,E Pizarro,P J Rowe,S.T. Shaw,T Wagatsuma,F Webb,E. Wilson +12 more
TL;DR: It is against this background that the recommendation of Dr Gardner and his colleagues is set; before it is generally adopted the opinions of those who would have to assume greater responsibility for this very large group of patients should be sought most carefully.
Journal Article
Ectopic pregnancy rates in IUD users [letter]
Aznar R,C L Berry,I D Cooke,A Cuadros,R. Gray,G P McNicol,Newton,E Pizarro,P J Rowe,S.T. Shaw +9 more
TL;DR: The steering committee of the Task Force on Intrauterine Devices for Fertility Regulation of the World Health Organizations Special Program of Research Development and Research Training in Human Reproduction has cited reservations regarding the hypothesized link between IUD use and ectopic pregnancy.