Dr. H O Donnell is affiliated to Department of Nursing and Midwifery, Queens University, where Dr. H O' Donnell is currently working as Professor. Dr. H O' Donnell has authored and co-authored several national and international publications and also working as a reviewer for reputed professional journals. Dr. H O' Donnell is having an active association with different societies and academies around the world. Dr. H O' Donnell made his mark in the scientific community with the contributions and widely recognition from honourable subject experts around the world. Dr. H O' Donnell has received several awards for the contributions to the scientific community. Dr. H O' Donnell major research interest involves Nursing and Midwifery.