1. Does this patient have clubbing?;Myers;JAMA,2001
2. Assessment of digital clubbing in medical inpatients by digital photography and computerized analysis;Husarik;Swiss Med Wkly,2002
3. Subjective assessment and objective measurement of finger clubbing;Regan;Lancet,1967
4. Cotton JA, Prats M, Bahner D. The lateral approach water bath: a novel and superior method of imaging distal upper extremities. Available at: http://guide.wcume2017.org/users/lectures/88. Accessed July 18, 2018.
5. Diagnosis of digital clubbing by high-frequency ultrasound imaging;Roy;Int J Dermatol,2013