1. Parsley WM, Waldman MA. Management of the postoperative period. In: Unger WP, Shapiro R, editors. Hair transplantation. 5th ed. New York: Marcel Dekker; 2011. p. 418–9.
2. Cohen BH. The Cohen hair loss index, profile and severity scale. In: Unger WP, Shapiro R, editors. Hair transplantation. 5th ed. New York: Marcel Dekker; 2011. p. 44–8.
3. Chang SC. Estimate number of grafts and donor area. Hair Transplant Forum Int. 2001;11(4):97, 102.
4. Caroli S, Pathomvanich D, Amonpattana K, Cacas TM, et al. Optimize the efficiency of recipient area estimation: a comparative study. Hair Transplant Forum Int. 2010;20(6):179,183–5.
5. Unger WP. Surgical planning and organization. In: Unger WP, Shapiro R, editors. Hair transplantation. 5th ed. New York: Marcel Dekker; 2011. p. 168–70.