TY - GEN AU - Torrington,M AU - Weymar,H W AU - van der Merwe,P L AU - Brink,A J TI - Progressive familial heart block. Part I. Extent of the disease SN - 0256-9574 PY - 1986///1015 KW - Heart Block KW - genetics KW - Humans KW - Pedigree KW - South Africa N1 - Publication Type: Journal Article ER -