Linear hair growth rates in preschool children.

Background: Human scalp hair is a validated bio-substrate for monitoring various exposures in childhood including contextual stressors, environmental toxins, prescription or non-prescription drugs. Linear hair growth rates (HGR) are required to accurately interpret hair biomarker concentrations.

Methods: We measured HGR in a prospective cohort of preschool children (N = 266) aged 9-72 months and assessed demographic factors, anthropometrics, and hair protein content (HPC).

Facial Nerve Reconstruction With Concurrent Masseteric Nerve Transfer and Cable Grafting.

Importance: Reconstruction of the facial nerve after radical parotidectomy is commonly performed with cable grafting, which is associated with slow recovery of nerve function and synkinesis.

Objective: To describe facial nerve reconstruction after radical parotidectomy using concurrent masseteric nerve transfer and cable grafting.

Design, Setting, And Participants: This retrospective medical record review at a tertiary referral hospital included 9 patients who underwent concurrent masseteric nerve transfer and cable grafting for facial nerve reconstruction performed by a single surgeon from January 1, 2014, to October 31, 2015.