Devi, Aruna
Ravindra, Khaiwal
Kaur, Manmeet
Kumar, Rajesh
Article History
Received: 9 May 2019
Accepted: 17 June 2019
First Online: 5 July 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The study protocol was approved by the Institute Ethical Committee via letter number INT/IEC/2018/535 dated 23 April 2018. Permission from Punjab Pollution Control Board (PPCB) and Directorate Health and Family Welfare, Punjab, were also received via letter number EPA/2015/3768 dated 5 Nov 2015 and DHS.BMW-PB-15-01 dated 16 Jan 2015, respectively.