Distance to the epidural space in nonobstetric patients.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000767:Anesthesia, Epidural; D001835:Body Weight; D004824:Epidural Space / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013115:Spinal Canal / Q000033:anatomy & histology*