function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chu, Chang & Lu, Ying & Yao, Zhiyuan & Li, Shuqiang', 3],
    ['Dean, David Allen', 1],
    ['Dupérré, Nadine', 3],
    ['Hazzi, Nicolás A. & Valderrama-Ardila, Carlos', 4],
    ['Jäger, Peter', 16],
    ['Jäger, Peter & Minn, Myin Zu', 4],
    ['Polotow, Daniele & Brescovit, Antonio D.', 7],
    ['Sankaran, Pradeep M. & Sebastian, Pothalil A.', 2],
    ['de Mello-Leitao, C.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);