TY - RPRT TI - Progressive systemic sclerosis; visceral manifestations in generalized scleroderma. AU - W N PIPER AU - E B HELWIG PY - 1955 DO - 10.1001/archderm.1955.03730360041004 UR - https://pubmed.ncbi.nlm.nih.gov/13268058/ ID - 13268058 ER -