COVID-19 in Pregnancy in Scotland (COPS): Protocol for an observational study using linked Scottish national data

Sarah Jane Stock, David McAllister, Eleftheria Vasileiou, Colin R. Simpson, Helen R. Stagg, Utkarsh Agrawal, Colin McCowan, Leanne Hopkins, Jack Donaghy, Lewis Ritchie, Chris Robertson, Aziz Sheikh, Rachael Wood