function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boldrini, R.', 1],
    ['Boldrini, R. & Lima, L. R. C.', 2],
    ['Mariano, Rodolfo & Froehlich, Claudio G.', 1],
    ['Nascimento, Stênio Raniery de Sousa & Lima, Lucas Ramos Costa', 1],
    ['Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos', 2],
    ['Orlando, Thales Yann & Salles, Frederico Falcão', 3],
    ['Peters, J. G. & Flowers, R. W. & Hubbard, M. D. & Domínguez, E.', 1],
    ['Salles, F. F. & Domínguez, E.', 3],
    ['Souto, Paula Malaquias & Da-Silva, Elidiomar Ribeiro', 3],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 4],
    ['Ávila, Socorro & Flowers, R. Wills', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);