1. The origin of pilonidal sinus;Fox;Surg., Gynec. & Obst.,1935
2. Pilonidal sinus; the factor of adolescence;Kallet;Tr. Am. Proct. Soc.,1936
3. Congenital proctologic defects in twins;Mechling;J. A. M. A.,1934
4. Pilonidal sinuses in identical twins;Goldberg;J. A. M. A.,1939
5. Pilonidal sinus;Kleckner;Tr. Am. Proct. Soc.,1936