Amazon, Barnes and Noble, Powell's Books, Google ebooks, eBooks.com, Audible and iTunes.
Jodi Picoult has sold over 14 million copies of all her books, meaning 14 million plus readers.
The novel allows for the audience to understand the destructive power illness has over a family, and since so many people around the world are suffering from cancer this novel is very relate-able to those readers.
Washington Square Press is the publisher. When a book is sold to a publisher they get to decide the distribution of the novel.