PT - JOURNAL ARTICLE AU - Leo R Brown TI - Safe surfaces AID - 10.7861/clinmed.Let.20.4.2 DP - 2020 Jul 01 TA - Clinical Medicine PG - e131--e132 VI - 20 IP - 4 4099 - http://www.rcpjournals.org/content/20/4/e131.2.short 4100 - http://www.rcpjournals.org/content/20/4/e131.2.full SO - Clin Med2020 Jul 01; 20