function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cadena-Castañeda, Oscar J. & Rodríguez, William David', 2],
    ['Desutter-Grandcolas, Laure', 5],
    ['He, Zhixin & Ma, Ge & Long, Jifeng & Wang, Yan & Zhang, Tao', 12],
    ['He, Zhuqing & Liu, Hui Lu Yuqing & Li, Kai', 3],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 8],
    ['Kim, Taewoo', 4],
    ['Skejo, Josip & Rebrina, Fran & Szövényi, Gergely', 3],
    ['Tan, Ming Kai', 7],
    ['Tan, Ming Kai & Dawwrueng, Pattarawich & Artchawakom, Taksin', 6],
    ['Tan, Ming Kai & Ingrisch, Sigfrid', 7],
    ['Tan, Ming Kai & Japir, Razy & Chung, Arthur Y. C.', 12],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 6],
    ['Wang, Ning & Che, Zhi-Yong & Ma, Li-Bin', 3],
    ['Yong, Sheyla & Perez-Gelabert, Daniel E.', 4],
    ['Zefa, Edison & Martins, Luciano De Pinho', 5],
    ['Other (16)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=109)',
    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);