Traditional smoking and e-smoking among medical students and students-athletes – popularity and motivation - Shpakou, Andrei; Kovalevskiy, Valeriy; Klimatskaia, Ludmila; Naumau, Ihar; Sivakova, Sviatlana; Zaitseva, Olga; Dykhno, Yury (Family Medicine & Primary Care Review, 2018)