Tapangco, M. P. M., Destriza, W.-N., Dimacali, B. D. and Olveda, M. B. (2012) “Topical Cepae Extract-Heparin Sodium-Allantoin Gel versus Placebo on Hypertrophic Thyroidectomy Scars: A Randomized, Double- Blinded, Split-Scar Controlled Trial”, Philippine Journal of Otolaryngology Head and Neck Surgery, 27(2), pp. 12–16. doi: 10.32412/pjohns.v27i2.521.