1 Dawn (Lizzy Greene) is the oldest of the quadruplets by four seconds. 2  Although she's always seen bothering her brothers, she does care about them deeply. 3  There is a consistent rivalry for the leader spot of the quads between her and Ricky. 4  Ricky (Casey Simpson) is the second oldest of the Harper quadruplets. Dawn (Lizzy Greene) is the oldest of the quadruplets by four seconds. 2  Although she's always seen bothering her brothers, she does care about them deeply. 3  There is a consistent rivalry for the leader spot of the quads between her and Ricky. 4  Ricky (Casey Simpson) is the second oldest of the Harper quadruplets.
St. Jude Children's Research Hospital is located in Memphis, Tennessee.
St. Jude Children's Research Hospital is the first and only National Cancer Institute-designated comprehensive cancer center devolved solely to children. This designation goes to hospitals that are highly advanced in research, treatment and prevention of cancer.