Does observation add to the validity of the long case?: Author’s reply
Norcini, J
Correspondence to: John Norcini,Executive Vice President, Institute for Clinical Evaluation, 510 Walnut Street, Suite 1410, Philadelphia, PA 19106-3699, USA. Tel.: 00 1 215 446 3540; Fax: 00 1 215 446 3597; E-mail: [email protected]
