function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Camper, Jeffrey D. & Torres-Carvajal, Omar & Ron, Santiago R.', 1],
    ['Citeli, Nathalie & Hamdan, Breno & Guedes, Thais', 2],
    ['Fischer, Wagner & Faria de Godoi, Raquel', 1],
    ['Graboski, Roberta & Arredondo, Juan C. & Grazziotin, Felipe G.', 4],
    ['Graboski, Roberta & Filho, Gentil Alves Pereira', 1],
    ['Nogueira, Cristiano C. & Argôlo, Antonio J. S.', 7],
    ['Pyron, Robert Alexander & Wallach, Van', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);