function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amin, Omar Mohamed & Heckmann, Richard A. & Ha, Nguyen Van', 1],
    ['Campião, Karla Magalhães & Morais, Drausio Honorio', 7],
    ['Hernández-Orts, Jesús S. & Kuchta, Roman & Semenas, Liliana', 3],
    ['Lopes, Daniela A. & Gomes, Delir Correa & Knoff, Marcelo', 1],
    ['Nakao, Minoru', 1],
    ['Santos, Cláudia P. & Gibson, David I. & Tavares, Luiz E. R.', 1],
    ['Tavakol, Sareh & Amin, Omar M. & Luus-Powell, Wilmien J.', 1],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);