function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Guang-Yu & Shen, Chu-Ze & Liu, Yun-Fei & Liao, Wang', 7],
    ['Gu, J. X. & Dai, L. & Huang, J. H.', 5],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 3],
    ['Hollier, John & Maehr, Michael, D.', 1],
    ['Kim, Tae-Woo & Puskás, Gellért', 1],
    ['Ma, Libin', 5],
    ['Ma, Libin & Qiao, Min & Zhang, Tao', 2],
    ['Meena, Ashok Kumar & Swaminathan, Rajamani', 2],
    ['Tan, Ming Kai & Abdul Wahab, Rodzay bin Haji', 2],
    ['Tan, Ming Kai & Dawwrueng, Pattarawich & Artchawakom, Taksin', 2],
    ['Tan, Ming Kai & Ingrisch, Sigfrid & Wahab, Rodzay Bin Haji Abdul', 2],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 1],
    ['Wang, Ning & Huang, Huateng & Ma, Li-Bin', 2],
    ['Yang, C. & Wei, Z. - D. & Liu, T. & Liu, H. - Y.', 2],
    ['Zheng, Yan-Na & Cai, Xin-Ru & Ma, Li-Bin', 4],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);