viagra without prescriptions Continuous data are given as weighted mean with SD and categorical variables are presented as n N, where n is the number of patients in which that variable is present and N the total number of patients for which that particular variable was reported
viagra without prescriptions Continuous data are given as weighted mean with SD and categorical variables are presented as n N, where n is the number of patients in which that variable is present and N the total number of patients for which that particular variable was reported