function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cezário, Rodrigo Roucourt & Vilela, Diogo Silva', 2],
    ['DeMarmels, Jurg', 4],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 2],
    ['Garrison, Rosser W.', 1],
    ['Garrison, Rosser W. & Ellenrieder, Natalia Von', 19],
    ['Garrison, Rosser W. & Ramón Cabrera, Giovanni M.', 1],
    ['Gonzalez Soriano, Enrique & Noguera, Felipe', 10],
    ['Jocque, Merlijn & Garrison, Rosser', 5],
    ['Kormondy, E. J.', 5],
    ['Mauffray, William F. & Tennessen, Kenneth J.', 1],
    ['Meurgey, François', 2],
    ['Novelo-Gutiérrez, Rodolfo', 1],
    ['Novelo-Gutiérrez, Rodolfo & Gómez-Anaya, José Antonio', 1],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 12],
    ['Vilela, Diogo Silva & Guillermo-Ferreira, Rhainer', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=70)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);