function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Alexandre O. & Boehs, Guisla', 1],
    ['Almeida, Alexandre O. & Terossi, Mariana & Buranelli, Raquel C.', 2],
    ['Anker, Arthur & Komai, Tomoyuki', 2],
    ['Anker, Arthur & Pratama, Idham Sumarto & Firdaus, Muhammad', 2],
    ['Anker, Arthur & Tavares, Marcos & Mendonça, Joel B.', 1],
    ['Filho, Petrônio Alves Coelho', 1],
    ['Komai, Tomoyuki & Tamego, Tomoyasu & Hanano, Kouichi', 1],
    ['Naderloo, Reza & Türkay, Michael', 1],
    ['Pachelle, Paulo P. G. & Anker, Arthur & Mendes, Cecili B.', 1],
    ['Ramos-Tafur, Gabriel E.', 1],
    ['Soledade, Guidomar O. & Fonseca, Mytalle S.', 1],
    ['Wang, Yan-Rong & Sha, Zhong-Li', 4],
    ['Wicksten, Mary K.', 1],
    ['de Man, Johannes Govertus', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);