function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrio-Amorós, César L. & Brewer-Carías, Charles', 1],
    ['Citeli, Nathalie & Hamdan, Breno & Guedes, Thais', 2],
    ['Costa, Henrique C. & Santana, Diego J. & Leal, Fernando', 1],
    ['Fischer, Wagner & Faria de Godoi, Raquel', 1],
    ['Guedes, Thaís B. & Nogueira, Cristiano & Marques, Otavio A. V.', 4],
    ['Kawashita-Ribeiro, Ricardo A. & Ávila, Robson W.', 1],
    ['Moraes-Da-Silva, Antonio & Amaro, Renata Cecília', 1],
    ['Nogueira, Cristiano C. & Argôlo, Antonio J. S.', 14],
    ['Schoeneberg, Yannis & Koehler, Gunther', 19],
    ['Waltrick, Camilla Spengler & Giasson, Luís Olímpio Menta', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);