function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ampuero, André & Ramírez, Rina', 2],
    ['Araya, Juan Francisco', 2],
    ['Breure, Abraham S. H. & Tardy, Emmanuel', 2],
    ['Cowie, Robert H.', 13],
    ['Cowie, Robert H. & Héros, Virginie', 1],
    ['Ng, Ting Hui & Dulipat, Jasrul & Foon, Junn Kitt', 1],
    ['Ng, Ting Hui & Jeratthitikul, Ekgachai & Sutcharit, Chirasak', 1],
    ['Yang, Qian-Qian & Yu, Xiao-Ping', 1],
    ['de Lima, Marcos Silva & Silva, Fernanda dos Santos', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);