function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barabanov, Andrei V. & Doronin, Igor V.', 1],
    ['Grismer, L. Lee & Ota, Hidetoshi & Tanaka, Satoshi', 1],
    ['Honda, Masanao & Ota, Hidetoshi', 1],
    ['Nakamura, Yasuyuki & Takahashi, Akio & Ota, Hidetoshi', 1],
    ['Ngo, Hai Ngoc & Nguyen, Huy Quoc & Tran, Hieu Minh', 6],
    ['Qi, Shuo & Wang, Jian & Grismer, L. Lee & Chen, Hong-Hui', 1],
    ['Yang, Jian-Huan & Chan, Bosco Pui-Lok', 2],
    ['Zhou, Run-Bang & Wang, Ning & Chen, Bei & Liang, Bin', 2],
    ['Zhu, Xiao-Yu & Chen, Guang-Yu & Román-Palacios, Cristian', 1],
    ['Zhu, Xiao-Yu & Shen, Chu-Ze & Liu, Yun-Fei & Chen, Lin', 1],
    ['Zhu, Xiao-Yu & Wu, Shi-Yang & Liu, Yi-Jiao & Bai, Yun', 1],
    ['Ziegler, Thomas & Truong, Nguyen Quang & Schmitz, Andreas', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);