Table of contents

Original research

• Comparison of self-report and objective measures of male sexual dysfunction in a Japanese primary care setting: a cross-sectional, self-administered mixed methods survey (22 January, 2021)

  Yuki Takeuchi, Ryohei Otsuka, Hajime Kojima, Michael D Fetters
• Utilisation of smoking cessation aids among South African adult smokers: findings from a national survey of 18 208 South African adults (11 January, 2021)

  Israel Agaku, Catherine Egbe, Olalekan Ayo-Yusuf
• Medical use and misuse of psychoactive prescription medications among US youth and young adults (3 February, 2021)

  Israel Agaku, Satomi Odani, Jantel Nelson