Akihito Nakai

Periodontal Disease is a Risk Factor for Placenta-Mediated Pregnancy Complications.

Journal: Journal of Nippon Medical School = Nippon Ika Daigaku zasshi

Published: August 26, 2026

Prevention of recurrent spontaneous preterm delivery using probiotics: results from a prospective, single-arm, multicenter trial.

Journal: American journal of obstetrics and gynecology

Published: July 13, 2025

The Perinatal Committee report: Review of the progress of obstetric healthcare in Japan.

Journal: The journal of obstetrics and gynaecology research

Published: June 04, 2025

Maternal Death due to Complications Related to Labor Analgesia: Report From Maternal Death Exploratory Committee in Japan.

Journal: The journal of obstetrics and gynaecology research

Published: May 26, 2025

Final Report of Trends in Pregnancy and Birth Survey after the Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Plant Accident: The Fukushima Health Management Survey.

Journal: Fukushima journal of medical science

Published: December 18, 2024

Maternal Death Due to Pulmonary Arterial Hypertension　- A Nationwide Survey in Japan.

Journal: Circulation journal : official journal of the Japanese Circulation Society

Published: November 27, 2024

Access to medical abortion and abortion care in Japan.

Journal: Preventive medicine reports

Published: November 01, 2024

Maternal mortality associated with anaesthetic interventions: nationwide analysis of maternal mortality in Japan from 2010 to 2022.

Journal: British journal of anaesthesia

Published: August 29, 2024

Prevention of Recurrent Spontaneous Preterm Delivery Using Probiotics (Clostridium butyricum, Enterococcus faecium, and Bacillus subtilis; PPP Trial): Protocol for a Prospective, Single-Arm, Nonblinded, Multicenter Trial.

Journal: JMIR research protocols

Published: April 26, 2024

Nationwide status of progestogen treatment to prevent spontaneous preterm birth: A questionnaire survey for childbirth healthcare facilities in Japan.

Journal: The journal of obstetrics and gynaecology research

Published: June 26, 2023

Prevention of fetal brain injury in category II tracings.

Journal: Acta obstetricia et gynecologica Scandinavica

Published: June 10, 2023

The Effects of the Great East Japan Earthquake on Perinatal Outcomes: Results of the Pregnancy and Birth Survey in the Fukushima Health Management Survey.

Journal: Journal of epidemiology

Published: December 04, 2022

Periodontal Disease is a Risk Factor for Placenta-Mediated Pregnancy Complications.

Periodontal Disease is a Risk Factor for Placenta-Mediated Pregnancy Complications.

Prevention of recurrent spontaneous preterm delivery using probiotics: results from a prospective, single-arm, multicenter trial.

Prevention of recurrent spontaneous preterm delivery using probiotics: results from a prospective, single-arm, multicenter trial.

The Perinatal Committee report: Review of the progress of obstetric healthcare in Japan.

The Perinatal Committee report: Review of the progress of obstetric healthcare in Japan.

Maternal Death due to Complications Related to Labor Analgesia: Report From Maternal Death Exploratory Committee in Japan.

Maternal Death due to Complications Related to Labor Analgesia: Report From Maternal Death Exploratory Committee in Japan.

Final Report of Trends in Pregnancy and Birth Survey after the Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Plant Accident: The Fukushima Health Management Survey.

Final Report of Trends in Pregnancy and Birth Survey after the Great East Japan Earthquake and Fukushima Daiichi Nuclear Power Plant Accident: The Fukushima Health Management Survey.

Maternal Death Due to Pulmonary Arterial Hypertension - A Nationwide Survey in Japan.

Maternal Death Due to Pulmonary Arterial Hypertension - A Nationwide Survey in Japan.

Access to medical abortion and abortion care in Japan.

Access to medical abortion and abortion care in Japan.

Maternal mortality associated with anaesthetic interventions: nationwide analysis of maternal mortality in Japan from 2010 to 2022.

Maternal mortality associated with anaesthetic interventions: nationwide analysis of maternal mortality in Japan from 2010 to 2022.

Prevention of Recurrent Spontaneous Preterm Delivery Using Probiotics (Clostridium butyricum, Enterococcus faecium, and Bacillus subtilis; PPP Trial): Protocol for a Prospective, Single-Arm, Nonblinded, Multicenter Trial.

Prevention of Recurrent Spontaneous Preterm Delivery Using Probiotics (Clostridium butyricum, Enterococcus faecium, and Bacillus subtilis; PPP Trial): Protocol for a Prospective, Single-Arm, Nonblinded, Multicenter Trial.

Nationwide status of progestogen treatment to prevent spontaneous preterm birth: A questionnaire survey for childbirth healthcare facilities in Japan.

Nationwide status of progestogen treatment to prevent spontaneous preterm birth: A questionnaire survey for childbirth healthcare facilities in Japan.

Prevention of fetal brain injury in category II tracings.

Prevention of fetal brain injury in category II tracings.

The Effects of the Great East Japan Earthquake on Perinatal Outcomes: Results of the Pregnancy and Birth Survey in the Fukushima Health Management Survey.

The Effects of the Great East Japan Earthquake on Perinatal Outcomes: Results of the Pregnancy and Birth Survey in the Fukushima Health Management Survey.

Maternal Death Due to Pulmonary Arterial Hypertension　- A Nationwide Survey in Japan.

Maternal Death Due to Pulmonary Arterial Hypertension　- A Nationwide Survey in Japan.