function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cianferoni, Fabio', 4],
    ['Cianferoni, Fabio & Buzzetti, Filippo Maria', 4],
    ['Dias-Silva, Karina & Moreira, Felipe Ferraz Figueiredo', 5],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 4],
    ['Heiss, Ernst & Eckelt, Andreas & Lederwasch, Manfred', 9],
    ['Jehamalar, E. Eyarin & Chandra, Kailash', 8],
    ['Kment, Petr & Kolínová, Zdislava', 5],
    ['Martínez, David Camilo & Galindo-Malagón, Ximena Alejandra', 11],
    ['Moreira, Felipe Ferraz Figueiredo & Barbosa, Julianna Freires', 12],
    ['Padilla-Gil, Dora N.', 5],
    ['Polhemus, Dan A.', 15],
    ['Riviaux, Senén Muñoz & Moreira, Felipe Ferraz Figueiredo', 5],
    ['Rodrigues, Juliana Mourão Dos Santos', 7],
    ['Zettel, Herbert & Tran, A. D.', 4],
    ['Zettel, Herbert & Yang, Chang Man', 4],
    ['Other (26)', 35]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=137)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);