Intimate physical contact between people from different households during the COVID-19 pandemic: a mixed-methods study from a large, quasi-representative survey (Natsal-COVID)
Pam Sonnenberg, Dee Menezes, Lily Freeman, Karen J Maxwell, David Reid, Soazig Clifton, Clare Tanton, Andrew Copas, Julie Riddell, Emily Dema, Raquel Bosó Pérez, Jo Gibbs, Mary-Clare Ridge, Wendy Macdowall, Magnus Unemo, Chris Bonell, Anne M Johnson, Catherine H Mercer, Kirstin Mitchell, Nigel Field
BMJ Open Feb 2022, 12 (2) e055284; DOI: 10.1136/bmjopen-2021-055284