by O’Donnell, Heather C., Kaushal, Rainu, Barrón, Yolanda, Callahan, Mark A., Adelman, Ronald D., Siegler, Eugenia L.
Published in Journal of general internal medicine : JGIM (01.01.2009)

by Pieracci, Fredric M., MD, MPH, Eachempati, Soumitra R., MD, FACS, Barie, Philip S., MD, MBA, FACS, Callahan, Mark A., MD
Published in Journal of the American College of Surgeons (01.09.2007)

by Bishop, Tara F., MD, Klotman, Paul E., MD, Vladeck, Bruce C., PhD, Callahan, Mark A., MD
Published in The American journal of medicine (01.08.2010)

by Bang, Heejung, Edwards, Alison M, Bomback, Andrew S, Ballantyne, Christie M, Brillon, David, Callahan, Mark A, Teutsch, Steven M, Mushlin, Alvin I, Kern, Lisa M
Published in Annals of internal medicine (01.12.2009)

by Lipp, Michael J, Nero, Damion C, Callahan, Mark A
Published in Journal of gastroenterology and hepatology (01.11.2012)

by Kern, Lisa M, Callahan, Mark A, Brillon, David J, Vargas, Maryelena, Mushlin, Alvin I
Published in BMC health services research (12.07.2006)

by Callahan, Mark A, Do, Huong T, Caplan, David W, Yoon-Flannery, Kahyun
Published in Postgraduate medicine (01.03.2009)

by Lee, Richard, Goldstein, Marc, Ullery, Brant W, Ehrlich, Joshua, Soares, Marc, Razzano, Renee A, Herman, Michael P, Callahan, Mark A, Li, Philip S, Schlegel, Peter N, Witkin, Steven S
Published in The Journal of urology (01.01.2009)

by Hupert, Nathaniel, Mushlin, Alvin I, Callahan, Mark A
Published in Medical decision making (01.09.2002)

by Callahan, Mark A, Christos, Paul J, Gold, Heather T, Mushlin, Alvin I, Daly, John M
Published in Annals of surgery (01.10.2003)

by Kern, Lisa M., Barrón, Yolanda, Blair, A. John, Salkowe, Jerry, Chambers, Deborah, Callahan, Mark A., Kaushal, Rainu
Published in Journal of general internal medicine : JGIM (01.04.2008)

by Ruchlin, Hirsch S, Dubbs, Nicole L, Callahan, Mark A
Published in Journal of healthcare management (01.01.2004)

by HUPERT, Nathaniel, BEARMAN, Gonzalo M. L, MUSHLIN, Alvin I, CALLAHAN, Mark A
Published in Annals of internal medicine (02.09.2003)

by Mushlin, Alvin I, Ruchlin, Hirsch S, Callahan, Mark A
Published in The Lancet (British edition) (20.10.2001)

by Schackman, Bruce R, Dastur, Zubin, Ni, Quanhong, Callahan, Mark A, Berger, Judith, Rubin, David S
Published in AIDS patient care and STDs (01.02.2008)

by O'Donnell, Heather C, Siegler, Eugenia L, Barrón, Yolanda, Callahan, Mark A, Adelman, Ronald D, Kaushal, Rainu
Published in AMIA ... Annual Symposium proceedings (06.11.2008)

by Callahan, Mark A, Ruchlin, Hirsch
Published in Nursing economic (01.11.2003)

by Nero, Damion C, Lipp, Michael J, Callahan, Mark A
Published in Journal of health care finance (2012)

by Battleman, David S., Callahan, Mark A., Silber, Steven, Mun˜oz, Cynthia I., Santiago, Lucia, Abularrage, Joseph, Jabbar, Hadi
Published in Academic emergency medicine (01.07.2001)

by Lipp, Michael J, Nero, Damion C, Callahan, Mark A
Published in Journal of gastroenterology and hepatology (01.11.2012)