Changes in primary care visits for respiratory illness during the COVID-19 pandemic: a multinational study by the International Consortium of Primary Care Big Data Researchers (INT... by Westfall, JM, Bonilla, AO, Lapadula, MC, Zingoni, PL, Wong, WCW, Wensaas, KA, Pace, WD, Silva-Valencia, J, Scattini, LF, Ng, APP, Manski-Nankervis, J, Ling, ZJ, Li, Z, Heald, AH, Laughlin, A, Kristiansson, RS, Hallinan, CM, Goh, LH, Gaona, G, Flottorp, S, de Lusignan, S, Cuba-Fuentes, MS, Baste, V, Tu, K