congenital erythropoietic porphyria blood and hemopoietic system 10 porphyria cutanea tarda 8 Male 6 porphyrin 6 Heme 4 Humans 4 Support, Non-U.S. Gov't 4 Uroporphyrinogen Decarboxylase 4 acute intermittent porphyria 4 animal experiment 4 article 4 congenital disorder 4 erythrocyte 4 human 4 human cell 4 intoxication 4 lead 4 major clinical study 4 normal human 4 porphobilinogen synthase 4 porphyria 4 5 aminolevulinate synthase 2 Adolescent 2 Animal 2 Argentina 2 Carboxy-Lyases 2 Compound heterozygous 2 DNA Mutational Analysis 2 Erythrocytes 2