"Try before you buy" - Download the FREE App, which includes sample content. An in-App purchase is required to unlock all content. #1 source of pediatric point-of-care clinical information. One-of-a-kind pediatric formulary. 35+ Built-in calculators. 35+ Interactive flowcharts Your #1 source of pediatric point-of-care clinical information. Every three years, The Harriet Lane Handbook is carefully updated by residents, edited by chief residents, and reviewed by expert faculty at The Johns Hopki