function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cadena-Castañeda, Rj. & Db. Weissman', 1],
    ['Ingrisch, Sigfrid', 9],
    ['Song, Qiong & Guo, Huifang & Bian, Xun & Shi, Fuming', 8],
    ['Wang, Han-Qiang & Liu, Xian-Wei', 1],
    ['Wang, Mengmeng & Liu, Xianwei & Li, Kai', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);