Received: 23 April 2019
Accepted: 13 June 2019
First Online: 10 July 2019
Ethics approval and consent to participate
: The present study was commenced after getting approval from the Institutional Ethics Committee (approval no. 06/HG dated 02/01/2015) of Guru Nanak Dev University, Amritsar (Punjab), India, in accordance with Indian Council of Medical Research guidelines (ICMR, 2006) modified from Declaration of Helsinki (2004). Voluntary consent in written was attained from all the participants.
: All authors gave their consent for publication of this manuscript.
: The authors declare they have no competing interests.