PT - JOURNAL ARTICLE AU - Gray, Charles TI - Porphyria AID - 10.1136/pgmj.32.366.186 DP - 1956 Apr 01 TA - Postgraduate Medical Journal PG - 186--190 VI - 32 IP - 366 4099 - http://pmj.bmj.com/content/32/366/186.short 4100 - http://pmj.bmj.com/content/32/366/186.full SO - Postgrad Med J1956 Apr 01; 32