function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrio-Amorós, César L. & Brewer-Carías, Charles', 1],
    ['Camper, Jeffrey D. & Torres-Carvajal, Omar & Ron, Santiago R.', 2],
    ['Citeli, Nathalie & Hamdan, Breno & Guedes, Thais', 6],
    ['Fernandes, Daniel Silva & Hamdan, Breno', 1],
    ['Fischer, Wagner & Faria de Godoi, Raquel', 1],
    ['Guedes, Thaís B. & Nogueira, Cristiano & Marques, Otavio A. V.', 5],
    ['Hamdan, Breno & Fernandes, Daniel S.', 2],
    ['Kok, Philippe J. R.', 2],
    ['Myers, C. W. & Donnelly, M. A.', 1],
    ['Nogueira, Cristiano C. & Argôlo, Antonio J. S.', 14],
    ['Sudre, Vinicius & Andrade-Junior, Albedi & Folly, Manuella', 3],
    ['Waltrick, Camilla Spengler & Giasson, Luís Olímpio Menta', 4],
    ['enezes, Frederico de Alcantara & Abegg, Arthur Diesel', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);