Received: 8 September 2020
Accepted: 22 March 2021
First Online: 1 April 2021
: The study was approved by the by the Ethics Committee of Qazvin University of Medical Sciences, Qazvin, Iran (IR.QUMS.REC. 1396.371). Prior to completing the questionnaires, written informed consent forms were signed by all the caregivers.
: Not applicable.
: The authors declare that they have no competing interests.