Mohamed Soliman, H.M. and Hassnein, A.A. 2016. Efficacy of Helfer Skin Tapping Technique on Pain Intensity as perceived by the patients receiving Intramuscular Injection. International journal of Nursing Didactics. 6, 2 (Feb. 2016), 12–22. DOI:https://doi.org/10.15520/ijnd.2016.vol6.iss2.135.12-22.