Leslie Curry is an internationally-recognized expert in mixed methods research.  For two decades, she has conducted extramurally-funded studies using these methods to examine health care delivery and quality in diverse settings and the scale up of health care innovations, with emphasis on translating her research into policy and practice. Leslie has extensive experience in teaching, mentoring, and consulting on qualitative and mixed methods with a wide range of researchers in the health sciences. She brings this experience to the book in order to include essential information needed to address the questions commonly asked by students and colleagues. Marcella Nunez-Smith is a practicing physician and researcher who has been awarded multiple grants from the U. S. National Institutes of Health and foundations to lead qualitative and mixed methods projects. She brings a unique vantage point as a traditionally-trained health services and clinical researcher who subsequently incorporated mixed methods approaches into her established research portfolio. Marcella also regularly reviews manuscripts and grant applications utilizing these methods. She seeks to bridge her mixed methods knowledge with the pragmatic needs of health sciences researchers.