function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brady, H. B.', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Gosliner, Terrence M. & Willan, Richard Cardew', 5],
    ['Gutiérrez, Manuel Caballer & Ortea, Jesús & Rivero, Nelsy', 3],
    ['Korshunova, Tatiana & Martynov, Alexander & Bakken, Torkild', 1],
    ['Tibiriçá, Yara & Pola, Marta & Cervera, Juan Lucas', 4],
    ['Wilson, Nerida G & Burghardt, Ingo', 1],
    ['Yonow, Nathalie & Anderson, R. Charles & Buttress, Susan G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    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);