title: Vitamin D status in adult critically ill patients in Eastern India: An observational retrospective study.
authors.affiliation: Department of Community Medicine, Dr. Rajendra Prasad Government Medical College, Tanda, Kangra, Himachal Pradesh, India. E-mail: ojasrainasunil@yahoo.co.in.
authors.forename: Sunil Kumar
authors.initials: SK
authors.lastname: Raina