title: Better concordance for  interphalangeal depth ratio  than Schamroth's sign  or hyponychial angle for  diagnosis of digital clubbing.
authors.forename: Davendralingam
authors.initials: D
authors.lastname: Sinniah
mesh_terms: D003952:Diagnostic Imaging / Q000379:methods*; D058006:General Practice / Q000379:methods*; D006801:Humans; D008297:Male; D010005:Osteoarthropathy, Secondary Hypertrophic / Q000175:diagnosis*