PT - JOURNAL ARTICLE ED - Prince Sultan Military Medical City TI - Is chloroquine or hydroxychloroquine useful in treating people with COVID-19, or in preventing infection in people who have been exposed to the virus? DP - 2021 Mar 01 TA - Saudi Medical Journal PG - 342--343 VI - 42 IP - 3 4099 - http://smj.org.sa/content/42/3/342.short 4100 - http://smj.org.sa/content/42/3/342.full SO - Saudi Med J2021 Mar 01; 42