Califf, R. M., Nissen, S. E., DeMaria, A. N., Ohman, E. M., Pitt, B., Willerson, J. T., … Popp, R. L. (2004). Task force 2: Investigator participation in clinical research. J Am Coll Cardiol, 44(8), 1729–1736. https://doi.org/10.1016/j.jacc.2004.08.039

Califf, Robert M., Steven E. Nissen, Anthony N. DeMaria, Erik Magnus Ohman, Bertram Pitt, James T. Willerson, David W. Bilheimer, et al. “Task force 2: Investigator participation in clinical research.” J Am Coll Cardiol 44, no. 8 (October 19, 2004): 1729–36. https://doi.org/10.1016/j.jacc.2004.08.039.

Califf RM, Nissen SE, DeMaria AN, Ohman EM, Pitt B, Willerson JT, et al. Task force 2: Investigator participation in clinical research. J Am Coll Cardiol. 2004 Oct 19;44(8):1729–36.

Califf, Robert M., et al. “Task force 2: Investigator participation in clinical research.” J Am Coll Cardiol, vol. 44, no. 8, Oct. 2004, pp. 1729–36. Pubmed, doi:10.1016/j.jacc.2004.08.039.

Califf RM, Nissen SE, DeMaria AN, Ohman EM, Pitt B, Willerson JT, Bilheimer DW, Cohn JN, Feigal DW, Hampson L, Lorell BH, Pepine CJ, Popp RL. Task force 2: Investigator participation in clinical research. J Am Coll Cardiol. 2004 Oct 19;44(8):1729–1736.