RT Journal Article SR Electronic T1 Five questions to consider when conducting COVID-19 phone research JF BMJ Global Health JO BMJ Global Health FD BMJ Publishing Group Ltd SP e004917 DO 10.1136/bmjgh-2020-004917 VO 6 IS Suppl 5 A1 Shreya Menon A1 Petra Sonderegger A1 Swetha Totapally YR 2021 UL http://gh.bmj.com/content/6/Suppl_5/e004917.abstract AB