Nitrous oxide for pain management of first-trimester instrumental termination of pregnancy under local anaesthesia and/or minimal sedation: A systematic review and meta-analysis

RoB 2: a revised tool for assessing risk of bias in randomised trials

(2019) Jonathan A C Sterne et al.   BMJ-British Medical Journal

Society of Family Planning clinical guidelines pain control in surgical abortion part 1 — local anesthesia and minimal sedation

(2018) Rebecca H. Allen et al.   CONTRACEPTION

Global, regional, and subregional classification of abortions by safety, 2010–14: estimates from a Bayesian hierarchical model

(2017) Bela Ganatra et al.   LANCET

Interruption volontaire de grossesse instrumentale

(2016) T. Linet   JOURNAL DE GYNECOLOGIE OBSTETRIQUE ET BIOLOGIE DE LA REPRODUCTION

Interruption volontaire de grossesse instrumentale

(2016) T. Linet   Journal of Gynecology Obstetrics and Human Reproduction

Nitrous oxide for pain management of first trimester surgical abortion — a randomized controlled pilot study

(2015) Rameet H. Singh et al.   CONTRACEPTION

Nitrous Oxide for the Management of Labor Pain

(2013) Frances E. Likis et al.   ANESTHESIA AND ANALGESIA

Systematic meta-analyses and field synopsis of genetic association studies of violence and aggression

(2013) E Vassos et al.   MOLECULAR PSYCHIATRY

A double-blind, randomized controlled trial of the use of a 50:50 mixture of nitrous oxide/oxygen in legal abortions

(2012) Aubert Agostini et al.   CONTRACEPTION

Preferred reporting items for systematic reviews and meta-analyses: The PRISMA statement

(2010) David Moher et al.   International Journal of Surgery

A basic introduction to fixed-effect and random-effects models for meta-analysis

(2010) Michael Borenstein et al.   Research Synthesis Methods