Gibson LE, Cooke RE (1959). "A test for concentration of electrolytes in sweat in cystic fibrosis of the pancreas utilizing pilocarpine by iontophoresis". Pediatrics. 23 (3): 545–9. doi:10.1542/peds.23.3.545. PMID13633369. S2CID31142533.
Gibson LE, Cooke RE (1959). "A test for concentration of electrolytes in sweat in cystic fibrosis of the pancreas utilizing pilocarpine by iontophoresis". Pediatrics. 23 (3): 545–9. doi:10.1542/peds.23.3.545. PMID13633369. S2CID31142533.
Gibson LE, Cooke RE (1959). "A test for concentration of electrolytes in sweat in cystic fibrosis of the pancreas utilizing pilocarpine by iontophoresis". Pediatrics. 23 (3): 545–9. doi:10.1542/peds.23.3.545. PMID13633369. S2CID31142533.