function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Lee, Sue Yeon & Lee, Joon-Ho & Yoo, Jung Sun & Kim, Seung Tae', 2],
    ['Li, Fan & Xu, Xin & Zhang, Zengtao & Liu, Fengxiang', 2],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 2],
    ['Siliwal, Manju & Kumar, Suresh & Raven, Robert', 1],
    ['Tanikawa, Akio', 1],
    ['Yanul, V. & Terekhova, V. & Polchaninova, N.', 2],
    ['Zhu, Ming-Sheng & Zhang, Feng & Song, Daxiang & Qu, Ping', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);