Minimizing delays in DNA retrieval: The "freezer method" for glass coverslip removal. Letter to the editor regarding comparative study of epidermal growth factor receptor mutation analysis on cytology smears and surgical pathology specimens from primary and metastatic lung carcinomas. Issue 9 (25th June 2013) - da, Gilda; Schroder, Monica; Zhu, Julie Baoqian; Saieg, Mauro Ajaj; Geddie, William R.; Boerner, Scott L.; McDonald, Scott