TY  - GEN
AU  - Nielsen,E M
AU  - Soffer,A
TI  - Is this physician really a specialist?
SN  - 0012-3692
PY  - 1990///0214
KW  - Certification
KW  - Directories as Topic
KW  - Pulmonary Medicine
KW  - Societies, Medical
KW  - United States
N1  - Publication Type: Directory; Editorial
UR  - https://doi.org/10.1378/chest.97.1.1a
ER  -