PT - JOURNAL ARTICLE ED - , TI - Instructions to Authors DP - 2021 Apr 01 TA - Saudi Medical Journal PG - 465--469 VI - 42 IP - 4 4099 - http://smj.org.sa/content/42/4/465.short 4100 - http://smj.org.sa/content/42/4/465.full SO - Saudi Med J2021 Apr 01; 42